Common Weakness Enumeration
CWE-93
AllowedImproper Neutralization of CRLF Sequences ('CRLF Injection')
Abstraction: Base · Status: Draft
The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs.
233 vulnerabilities reference this CWE, most recent first.
CVE-2026-48861 (GCVE-0-2026-48861)
Vulnerability from cvelistv5 – Published: 2026-06-02 14:15 – Updated: 2026-06-02 19:14
VLAI
EPSS
VEX
Title
CRLF injection in HTTP/1 request line via unvalidated method in Mint
Summary
Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability in elixir-mint Mint allows HTTP Request Splitting and HTTP Request Smuggling.
In lib/mint/http1/request.ex, the encode_request_line/2 function splices the caller-supplied method and target arguments directly into the HTTP/1 request line without any character validation: [method, ?\s, target, " HTTP/1.1\r\n"]. An application that forwards attacker-controlled input as the HTTP method or target to Mint.HTTP.request/5 is therefore exposed to request-line CRLF injection: the attacker can terminate the request line early, inject arbitrary headers, and smuggle an entirely separate pipelined HTTP request onto the same TCP connection.
Mint 1.7.0 introduced validate_request_target/2, which rejects CRLF and other control characters in the target by default and closes the path/query vector unless the caller opts out via skip_target_validation: true. The method field remains unvalidated, so the method-based injection is exploitable under the default Mint configuration on all versions.
This issue affects mint: from 0.1.0 before 1.9.0.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-02 18:11 UTC
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
EEF
CNA
References
4 references
| URL | Tags |
|---|---|
| https://github.com/elixir-mint/mint/security/advi… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-48861.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-48861 | related |
| https://github.com/elixir-mint/mint/commit/fad091… | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| elixir-mint | mint |
Affected:
0.1.0 , < 1.9.0
(semver)
cpe:2.3:a:elixir-mint:mint:*:*:*:*:*:*:*:* |
|
| elixir-mint | mint |
Affected:
8db1acff30b6a9433762c18b1e1f891b8c1f74f7 , < fad091454cbb7449b19edb8e1fee12ca7cf28c3a
(git)
cpe:2.3:a:elixir-mint:mint:*:*:*:*:*:*:*:* |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-48861",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-02T18:11:46.297986Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-02T18:12:22.736Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/elixir-mint/mint/security/advisories/GHSA-2pg6-44cx-c49v"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://repo.hex.pm",
"cpes": [
"cpe:2.3:a:elixir-mint:mint:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"\u0027Elixir.Mint.HTTP1.Request\u0027"
],
"packageName": "mint",
"packageURL": "pkg:hex/mint",
"product": "mint",
"programFiles": [
"lib/mint/http1/request.ex"
],
"programRoutines": [
{
"name": "\u0027Elixir.Mint.HTTP1.Request\u0027:encode_request_line/2"
}
],
"repo": "https://github.com/elixir-mint/mint",
"vendor": "elixir-mint",
"versions": [
{
"lessThan": "1.9.0",
"status": "affected",
"version": "0.1.0",
"versionType": "semver"
}
]
},
{
"collectionURL": "https://github.com",
"cpes": [
"cpe:2.3:a:elixir-mint:mint:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"\u0027Elixir.Mint.HTTP1.Request\u0027"
],
"packageName": "elixir-mint/mint",
"packageURL": "pkg:github/elixir-mint/mint",
"product": "mint",
"programFiles": [
"lib/mint/http1/request.ex"
],
"programRoutines": [
{
"name": "\u0027Elixir.Mint.HTTP1.Request\u0027:encode_request_line/2"
}
],
"repo": "https://github.com/elixir-mint/mint.git",
"vendor": "elixir-mint",
"versions": [
{
"lessThan": "fad091454cbb7449b19edb8e1fee12ca7cf28c3a",
"status": "affected",
"version": "8db1acff30b6a9433762c18b1e1f891b8c1f74f7",
"versionType": "git"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:elixir-mint:mint:*:*:*:*:*:*:*:*",
"versionEndExcluding": "1.9.0",
"versionStartIncluding": "0.1.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Peter Ullrich"
},
{
"lang": "en",
"type": "remediation developer",
"value": "Eric Meadows-J\u00f6nsson"
},
{
"lang": "en",
"type": "analyst",
"value": "Jonatan M\u00e4nnchen / EEF"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Improper Neutralization of CRLF Sequences (\u0027CRLF Injection\u0027) vulnerability in elixir-mint Mint allows HTTP Request Splitting and HTTP Request Smuggling.\u003cp\u003eIn \u003ctt\u003elib/mint/http1/request.ex\u003c/tt\u003e, the \u003ctt\u003eencode_request_line/2\u003c/tt\u003e function splices the caller-supplied \u003ctt\u003emethod\u003c/tt\u003e and \u003ctt\u003etarget\u003c/tt\u003e arguments directly into the HTTP/1 request line without any character validation: \u003ctt\u003e[method, ?\\s, target, \" HTTP/1.1\\r\\n\"]\u003c/tt\u003e. An application that forwards attacker-controlled input as the HTTP method or target to \u003ctt\u003e\u0027Elixir.Mint.HTTP\u0027:request/5\u003c/tt\u003e is therefore exposed to request-line CRLF injection: the attacker can terminate the request line early, inject arbitrary headers, and smuggle an entirely separate pipelined HTTP request onto the same TCP connection.\u003c/p\u003e\u003cp\u003eMint 1.7.0 introduced \u003ctt\u003evalidate_request_target/2\u003c/tt\u003e, which rejects CRLF and other control characters in the \u003ctt\u003etarget\u003c/tt\u003e by default and closes the path/query vector unless the caller opts out via \u003ctt\u003eskip_target_validation: true\u003c/tt\u003e. The \u003ctt\u003emethod\u003c/tt\u003e field remains unvalidated, so the method-based injection is exploitable under the default Mint configuration on all versions.\u003c/p\u003e\u003cp\u003eThis issue affects mint: from 0.1.0 before 1.9.0.\u003c/p\u003e"
}
],
"value": "Improper Neutralization of CRLF Sequences (\u0027CRLF Injection\u0027) vulnerability in elixir-mint Mint allows HTTP Request Splitting and HTTP Request Smuggling.\n\nIn lib/mint/http1/request.ex, the encode_request_line/2 function splices the caller-supplied method and target arguments directly into the HTTP/1 request line without any character validation: [method, ?\\s, target, \" HTTP/1.1\\r\\n\"]. An application that forwards attacker-controlled input as the HTTP method or target to Mint.HTTP.request/5 is therefore exposed to request-line CRLF injection: the attacker can terminate the request line early, inject arbitrary headers, and smuggle an entirely separate pipelined HTTP request onto the same TCP connection.\n\nMint 1.7.0 introduced validate_request_target/2, which rejects CRLF and other control characters in the target by default and closes the path/query vector unless the caller opts out via skip_target_validation: true. The method field remains unvalidated, so the method-based injection is exploitable under the default Mint configuration on all versions.\n\nThis issue affects mint: from 0.1.0 before 1.9.0."
}
],
"impacts": [
{
"capecId": "CAPEC-33",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-33 HTTP Request Smuggling"
}
]
},
{
"capecId": "CAPEC-105",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-105 HTTP Request Splitting"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "LOCAL",
"baseScore": 2.1,
"baseSeverity": "LOW",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "LOW",
"userInteraction": "NONE",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "LOW"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-93",
"description": "CWE-93 Improper Neutralization of CRLF Sequences (\u0027CRLF Injection\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-02T19:14:00.466Z",
"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"shortName": "EEF"
},
"references": [
{
"tags": [
"vendor-advisory",
"related"
],
"url": "https://github.com/elixir-mint/mint/security/advisories/GHSA-2pg6-44cx-c49v"
},
{
"tags": [
"related"
],
"url": "https://cna.erlef.org/cves/CVE-2026-48861.html"
},
{
"tags": [
"related"
],
"url": "https://osv.dev/vulnerability/EEF-CVE-2026-48861"
},
{
"tags": [
"patch"
],
"url": "https://github.com/elixir-mint/mint/commit/fad091454cbb7449b19edb8e1fee12ca7cf28c3a"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "CRLF injection in HTTP/1 request line via unvalidated method in Mint",
"x_generator": {
"engine": "cvelib 1.8.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"assignerShortName": "EEF",
"cveId": "CVE-2026-48861",
"datePublished": "2026-06-02T14:15:09.015Z",
"dateReserved": "2026-05-25T20:44:10.697Z",
"dateUpdated": "2026-06-02T19:14:00.466Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-48019 (GCVE-0-2026-48019)
Vulnerability from cvelistv5 – Published: 2026-09-04 22:11 – Updated: 2026-09-08 13:01
VLAI
EPSS
VEX
Title
CRLF injection in Laravel's default email rule enables SMTP smuggling and spoofed-mail relay
Summary
Laravel is a web application framework. Prior to versions 12.60.0 and 13.10.0, a CRLF injection vulnerability in Laravel's email validation, in combination with how Symfony Mailer and Symfony Mime handle certain character sequences, may allow an unauthenticated attacker to interfere with outbound email processing in applications that send mail to user-supplied addresses. This issue has been patched in versions 12.60.0 and 13.10.0.
Severity
8.9 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 13:01 UTC
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
GitHub_M
CNA
References
6 references
| URL | Tags |
|---|---|
| https://github.com/laravel/framework/security/adv… | x_refsource_CONFIRM |
| https://github.com/laravel/framework/pull/60151 | x_refsource_MISC |
| https://github.com/laravel/framework/commit/96e9a… | x_refsource_MISC |
| https://github.com/laravel/framework/commit/f336b… | x_refsource_MISC |
| https://github.com/laravel/framework/releases/tag… | x_refsource_MISC |
| https://github.com/laravel/framework/releases/tag… | x_refsource_MISC |
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-48019",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-08T13:01:14.091808Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-08T13:01:38.157Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "framework",
"vendor": "laravel",
"versions": [
{
"status": "affected",
"version": "\u003e= 13.0.0, \u003c 13.10.0"
},
{
"status": "affected",
"version": "\u003c 12.60.0"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Laravel is a web application framework. Prior to versions 12.60.0 and 13.10.0, a CRLF injection vulnerability in Laravel\u0027s email validation, in combination with how Symfony Mailer and Symfony Mime handle certain character sequences, may allow an unauthenticated attacker to interfere with outbound email processing in applications that send mail to user-supplied addresses. This issue has been patched in versions 12.60.0 and 13.10.0."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 8.9,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-93",
"description": "CWE-93: Improper Neutralization of CRLF Sequences (\u0027CRLF Injection\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-04T22:11:40.811Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/laravel/framework/security/advisories/GHSA-5vg9-5847-vvmq",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/laravel/framework/security/advisories/GHSA-5vg9-5847-vvmq"
},
{
"name": "https://github.com/laravel/framework/pull/60151",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/laravel/framework/pull/60151"
},
{
"name": "https://github.com/laravel/framework/commit/96e9a663db657cf37ef26cd794fda8ff60eaa451",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/laravel/framework/commit/96e9a663db657cf37ef26cd794fda8ff60eaa451"
},
{
"name": "https://github.com/laravel/framework/commit/f336ba79e744257f84ebf0d096b0ebc62e8e1a4d",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/laravel/framework/commit/f336ba79e744257f84ebf0d096b0ebc62e8e1a4d"
},
{
"name": "https://github.com/laravel/framework/releases/tag/v12.60.0",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/laravel/framework/releases/tag/v12.60.0"
},
{
"name": "https://github.com/laravel/framework/releases/tag/v13.10.0",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/laravel/framework/releases/tag/v13.10.0"
}
],
"source": {
"advisory": "GHSA-fpqx-6722-p65v",
"discovery": "UNKNOWN"
},
"title": "CRLF injection in Laravel\u0027s default email rule enables SMTP smuggling and spoofed-mail relay"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-48019",
"datePublished": "2026-09-04T22:11:40.811Z",
"dateReserved": "2026-05-20T17:44:09.587Z",
"dateUpdated": "2026-09-08T13:01:38.157Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-47242 (GCVE-0-2026-47242)
Vulnerability from cvelistv5 – Published: 2026-06-22 20:19 – Updated: 2026-06-23 12:06
VLAI
EPSS
VEX
Title
Net::IMAP: Command Injection via ID command argument
Summary
Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to 0.6.5 and 0.5.15, when Net::IMAP#id is called with a hash argument, although the ID field value strings are correctly quoted (escaping quoted specials), they were not validated to prohibit CRLF sequences. While Net::IMAP#enable does process its arguments for aliases, it does not validate them as valid atoms (or as a list of valid atoms). The #to_s value is sent verbatim. Arguments to either command could be used by an attacker to inject arbitrary IMAP commands. This vulnerability is fixed in 0.6.5 and 0.5.15.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-23 12:06 UTC
CWE
Assigner
GitHub_M
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/ruby/net-imap/security/advisor… | x_refsource_CONFIRM |
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-47242",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-23T12:06:42.230852Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-23T12:06:49.157Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "net-imap",
"vendor": "ruby",
"versions": [
{
"status": "affected",
"version": "\u003e= 0.6.0, \u003c 0.6.4.1"
},
{
"status": "affected",
"version": "\u003c 0.5.15"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to 0.6.5 and 0.5.15, when Net::IMAP#id is called with a hash argument, although the ID field value strings are correctly quoted (escaping quoted specials), they were not validated to prohibit CRLF sequences. While Net::IMAP#enable does process its arguments for aliases, it does not validate them as valid atoms (or as a list of valid atoms). The #to_s value is sent verbatim. Arguments to either command could be used by an attacker to inject arbitrary IMAP commands. This vulnerability is fixed in 0.6.5 and 0.5.15."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "LOCAL",
"baseScore": 5.8,
"baseSeverity": "MEDIUM",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "PASSIVE",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "LOW",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "HIGH"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-77",
"description": "CWE-77: Improper Neutralization of Special Elements used in a Command (\u0027Command Injection\u0027)",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-93",
"description": "CWE-93: Improper Neutralization of CRLF Sequences (\u0027CRLF Injection\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-22T20:19:41.222Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/ruby/net-imap/security/advisories/GHSA-46q3-7gv7-qmgg",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/ruby/net-imap/security/advisories/GHSA-46q3-7gv7-qmgg"
}
],
"source": {
"advisory": "GHSA-46q3-7gv7-qmgg",
"discovery": "UNKNOWN"
},
"title": "Net::IMAP: Command Injection via ID command argument"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-47242",
"datePublished": "2026-06-22T20:19:41.222Z",
"dateReserved": "2026-05-18T22:54:18.272Z",
"dateUpdated": "2026-06-23T12:06:49.157Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-47240 (GCVE-0-2026-47240)
Vulnerability from cvelistv5 – Published: 2026-06-22 20:17 – Updated: 2026-06-23 15:06
VLAI
EPSS
VEX
Title
Net::IMAP: Command Injection via non-synchronizing literal in "raw" argument
Summary
Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to 0.6.5 and 0.5.15, several Net::IMAP commands accept a "raw data" argument that is sent verbatim after validation to prevent command injection. However, if a server does not support non-synchronizing literals, it may still be possible to inject arbitrary IMAP commands inside non-synchronizing literals. A server without support for non-synchronizing literals may interpret the "+}\r\n" as the end of a malformed command line and respond with a tagged BAD. In that case, the contents of the literal will be interpreted as one or more new pipelined commands, allowing a CRLF command injection attack to succeed. This affects criteria for #search and #uid_search; search_keys for #sort, #thread, #uid_sort, and #uid_thread; and attr for #fetch and #uid_fetch. This vulnerability is fixed in 0.6.5 and 0.5.15.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-23 14:52 UTC
CWE
Assigner
GitHub_M
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/ruby/net-imap/security/advisor… | x_refsource_CONFIRM |
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-47240",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-23T14:52:09.927243Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-23T15:06:33.819Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "net-imap",
"vendor": "ruby",
"versions": [
{
"status": "affected",
"version": "\u003e= 0.6.0, \u003c 0.6.4.1"
},
{
"status": "affected",
"version": "\u003c 0.5.15"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to 0.6.5 and 0.5.15, several Net::IMAP commands accept a \"raw data\" argument that is sent verbatim after validation to prevent command injection. However, if a server does not support non-synchronizing literals, it may still be possible to inject arbitrary IMAP commands inside non-synchronizing literals. A server without support for non-synchronizing literals may interpret the \"+}\\r\\n\" as the end of a malformed command line and respond with a tagged BAD. In that case, the contents of the literal will be interpreted as one or more new pipelined commands, allowing a CRLF command injection attack to succeed. This affects criteria for #search and #uid_search; search_keys for #sort, #thread, #uid_sort, and #uid_thread; and attr for #fetch and #uid_fetch. This vulnerability is fixed in 0.6.5 and 0.5.15."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "LOCAL",
"baseScore": 5.8,
"baseSeverity": "MEDIUM",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "PASSIVE",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "LOW",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "HIGH"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-77",
"description": "CWE-77: Improper Neutralization of Special Elements used in a Command (\u0027Command Injection\u0027)",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-93",
"description": "CWE-93: Improper Neutralization of CRLF Sequences (\u0027CRLF Injection\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-22T20:17:15.376Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/ruby/net-imap/security/advisories/GHSA-8p34-64r3-mwg8",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/ruby/net-imap/security/advisories/GHSA-8p34-64r3-mwg8"
}
],
"source": {
"advisory": "GHSA-8p34-64r3-mwg8",
"discovery": "UNKNOWN"
},
"title": "Net::IMAP: Command Injection via non-synchronizing literal in \"raw\" argument"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-47240",
"datePublished": "2026-06-22T20:17:15.376Z",
"dateReserved": "2026-05-18T22:54:18.272Z",
"dateUpdated": "2026-06-23T15:06:33.819Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-47075 (GCVE-0-2026-47075)
Vulnerability from cvelistv5 – Published: 2026-05-25 14:00 – Updated: 2026-07-24 14:15
VLAI
EPSS
VEX
Title
CR/LF injection in query parameter in hackney
Summary
Improper Neutralization of CRLF Sequences vulnerability in benoitc hackney allows HTTP Request Splitting. hackney does not percent-encode carriage return (\r) or line feed (\n) characters in the URL query component before constructing the HTTP/1.1 request target. Characters outside the grammar defined in RFC 3986 Section 3.4 must be percent-encoded, but hackney_url:make_url/3 passes the query binary directly without validation or escaping. An attacker who can control all or part of a URL passed to hackney can inject raw CRLF sequences into the query string, which are then sent as HTTP line breaks in the request target. This enables injection of arbitrary HTTP headers or splitting of the HTTP request.
This issue affects hackney: from 0.13.1 before 4.0.1.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-26 15:50 UTC
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
EEF
CNA
References
4 references
| URL | Tags |
|---|---|
| https://github.com/benoitc/hackney/security/advis… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-47075.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-47075 | related |
| https://github.com/benoitc/hackney/commit/ca73dd0… | patch |
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-47075",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-26T15:50:04.477395Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-26T15:50:09.349Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/benoitc/hackney/security/advisories/GHSA-j9wq-vxxc-94wf"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://repo.hex.pm",
"cpes": [
"cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"hackney_url"
],
"packageName": "hackney",
"packageURL": "pkg:hex/hackney",
"product": "hackney",
"programFiles": [
"src/hackney_url.erl"
],
"programRoutines": [
{
"name": "hackney_url:make_url/3"
}
],
"repo": "https://github.com/benoitc/hackney",
"vendor": "benoitc",
"versions": [
{
"lessThan": "4.0.1",
"status": "affected",
"version": "0.13.1",
"versionType": "semver"
}
]
},
{
"collectionURL": "https://github.com",
"cpes": [
"cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"hackney_url"
],
"packageName": "benoitc/hackney",
"packageURL": "pkg:github/benoitc/hackney",
"product": "hackney",
"programFiles": [
"src/hackney_url.erl"
],
"programRoutines": [
{
"name": "hackney_url:make_url/3"
}
],
"repo": "https://github.com/benoitc/hackney",
"vendor": "benoitc",
"versions": [
{
"lessThan": "ca73dd0aba0ed557449c18288bf07241671a43c9",
"status": "affected",
"version": "8bb1a359a81ae58567c84f8d24564e9742e6f2bd",
"versionType": "git"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.0.1",
"versionStartIncluding": "0.13.1",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "tepel-chen"
},
{
"lang": "en",
"type": "remediation developer",
"value": "Benoit Chesneau"
},
{
"lang": "en",
"type": "analyst",
"value": "Jonatan M\u00e4nnchen / EEF"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Improper Neutralization of CRLF Sequences vulnerability in benoitc hackney allows HTTP Request Splitting.\u003cp\u003ehackney does not percent-encode carriage return (\u003ctt\u003e\\r\u003c/tt\u003e) or line feed (\u003ctt\u003e\\n\u003c/tt\u003e) characters in the URL query component before constructing the HTTP/1.1 request target. Characters outside the grammar defined in RFC 3986 Section 3.4 must be percent-encoded, but \u003ctt\u003ehackney_url:make_url/3\u003c/tt\u003e passes the query binary directly without validation or escaping. An attacker who can control all or part of a URL passed to hackney can inject raw CRLF sequences into the query string, which are then sent as HTTP line breaks in the request target. This enables injection of arbitrary HTTP headers or splitting of the HTTP request.\u003c/p\u003e\u003cp\u003eThis issue affects hackney: from 0.13.1 before 4.0.1.\u003c/p\u003e"
}
],
"value": "Improper Neutralization of CRLF Sequences vulnerability in benoitc hackney allows HTTP Request Splitting. hackney does not percent-encode carriage return (\\r) or line feed (\\n) characters in the URL query component before constructing the HTTP/1.1 request target. Characters outside the grammar defined in RFC 3986 Section 3.4 must be percent-encoded, but hackney_url:make_url/3 passes the query binary directly without validation or escaping. An attacker who can control all or part of a URL passed to hackney can inject raw CRLF sequences into the query string, which are then sent as HTTP line breaks in the request target. This enables injection of arbitrary HTTP headers or splitting of the HTTP request.\n\nThis issue affects hackney: from 0.13.1 before 4.0.1."
}
],
"impacts": [
{
"capecId": "CAPEC-105",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-105 HTTP Request Splitting"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "LOCAL",
"baseScore": 6.8,
"baseSeverity": "MEDIUM",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "HIGH",
"userInteraction": "ACTIVE",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "HIGH"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-93",
"description": "CWE-93 Improper Neutralization of CRLF Sequences (\u0027CRLF Injection\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-24T14:15:24.720Z",
"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"shortName": "EEF"
},
"references": [
{
"tags": [
"vendor-advisory",
"related"
],
"url": "https://github.com/benoitc/hackney/security/advisories/GHSA-j9wq-vxxc-94wf"
},
{
"tags": [
"related"
],
"url": "https://cna.erlef.org/cves/CVE-2026-47075.html"
},
{
"tags": [
"related"
],
"url": "https://osv.dev/vulnerability/EEF-CVE-2026-47075"
},
{
"tags": [
"patch"
],
"url": "https://github.com/benoitc/hackney/commit/ca73dd0aba0ed557449c18288bf07241671a43c9"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "CR/LF injection in query parameter in hackney",
"x_generator": {
"engine": "cvelib 1.8.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"assignerShortName": "EEF",
"cveId": "CVE-2026-47075",
"datePublished": "2026-05-25T14:00:45.781Z",
"dateReserved": "2026-05-18T17:28:08.322Z",
"dateUpdated": "2026-07-24T14:15:24.720Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-47072 (GCVE-0-2026-47072)
Vulnerability from cvelistv5 – Published: 2026-05-25 14:00 – Updated: 2026-05-27 15:41
VLAI
EPSS
VEX
Title
CRLF injection in WebSocket upgrade request in hackney
Summary
Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability in benoitc hackney allows HTTP Request/Response Splitting. The WebSocket upgrade code in src/hackney_ws.erl copies the host, path, headers (ExtraHeaders), and protocols options from the caller-supplied opts map into the internal #ws_data{} record in init/1 and then splices them verbatim into the raw HTTP/1.1 upgrade request by binary concatenation in do_handshake/1. No CRLF or NUL stripping is performed at any of these four injection sites. An attacker who controls any of these options — for example by forwarding URL components or header values from untrusted input into hackney_ws:start_link/1 — can inject arbitrary HTTP headers into the outbound WebSocket upgrade request, leading to header injection, credential spoofing toward the upstream server, log and cache poisoning, or request smuggling via intermediary proxies.
This issue affects hackney: from 2.0.0 before 4.0.1.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-26 15:46 UTC
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
EEF
CNA
References
4 references
| URL | Tags |
|---|---|
| https://github.com/benoitc/hackney/security/advis… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-47072.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-47072 | related |
| https://github.com/benoitc/hackney/commit/52310ca… | patch |
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-47072",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-26T15:46:12.092004Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-26T15:46:14.885Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/benoitc/hackney/security/advisories/GHSA-f9vr-g2g2-x9fg"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://repo.hex.pm",
"cpes": [
"cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"hackney_ws"
],
"packageName": "hackney",
"packageURL": "pkg:hex/hackney",
"product": "hackney",
"programFiles": [
"src/hackney_ws.erl"
],
"programRoutines": [
{
"name": "hackney_ws:do_handshake/1"
},
{
"name": "hackney_ws:init/1"
}
],
"repo": "https://github.com/benoitc/hackney",
"vendor": "benoitc",
"versions": [
{
"lessThan": "4.0.1",
"status": "affected",
"version": "2.0.0",
"versionType": "semver"
}
]
},
{
"collectionURL": "https://github.com",
"cpes": [
"cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"hackney_ws"
],
"packageName": "benoitc/hackney",
"packageURL": "pkg:github/benoitc/hackney",
"product": "hackney",
"programFiles": [
"src/hackney_ws.erl"
],
"programRoutines": [
{
"name": "hackney_ws:do_handshake/1"
},
{
"name": "hackney_ws:init/1"
}
],
"repo": "https://github.com/benoitc/hackney",
"vendor": "benoitc",
"versions": [
{
"lessThan": "52310ca807e7b48441ba0e9129171f535313fdd1",
"status": "affected",
"version": "690cecaf236fba49526da404a5bc889a24367a3e",
"versionType": "git"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.0.1",
"versionStartIncluding": "2.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "AND"
}
],
"operator": "AND"
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Peter Ullrich"
},
{
"lang": "en",
"type": "remediation developer",
"value": "Benoit Chesneau"
},
{
"lang": "en",
"type": "analyst",
"value": "Jonatan M\u00e4nnchen / EEF"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Improper Neutralization of CRLF Sequences (\u0027CRLF Injection\u0027) vulnerability in benoitc hackney allows HTTP Request/Response Splitting.\u003cp\u003eThe WebSocket upgrade code in \u003ctt\u003esrc/hackney_ws.erl\u003c/tt\u003e copies the \u003ctt\u003ehost\u003c/tt\u003e, \u003ctt\u003epath\u003c/tt\u003e, \u003ctt\u003eheaders\u003c/tt\u003e (ExtraHeaders), and \u003ctt\u003eprotocols\u003c/tt\u003e options from the caller-supplied opts map into the internal \u003ctt\u003e#ws_data{}\u003c/tt\u003e record in \u003ctt\u003einit/1\u003c/tt\u003e and then splices them verbatim into the raw HTTP/1.1 upgrade request by binary concatenation in \u003ctt\u003edo_handshake/1\u003c/tt\u003e. No CRLF or NUL stripping is performed at any of these four injection sites. An attacker who controls any of these options \u2014 for example by forwarding URL components or header values from untrusted input into \u003ctt\u003ehackney_ws:start_link/1\u003c/tt\u003e \u2014 can inject arbitrary HTTP headers into the outbound WebSocket upgrade request, leading to header injection, credential spoofing toward the upstream server, log and cache poisoning, or request smuggling via intermediary proxies.\u003c/p\u003e\u003cp\u003eThis issue affects hackney: from 2.0.0 before 4.0.1.\u003c/p\u003e"
}
],
"value": "Improper Neutralization of CRLF Sequences (\u0027CRLF Injection\u0027) vulnerability in benoitc hackney allows HTTP Request/Response Splitting. The WebSocket upgrade code in src/hackney_ws.erl copies the host, path, headers (ExtraHeaders), and protocols options from the caller-supplied opts map into the internal #ws_data{} record in init/1 and then splices them verbatim into the raw HTTP/1.1 upgrade request by binary concatenation in do_handshake/1. No CRLF or NUL stripping is performed at any of these four injection sites. An attacker who controls any of these options \u2014 for example by forwarding URL components or header values from untrusted input into hackney_ws:start_link/1 \u2014 can inject arbitrary HTTP headers into the outbound WebSocket upgrade request, leading to header injection, credential spoofing toward the upstream server, log and cache poisoning, or request smuggling via intermediary proxies.\n\nThis issue affects hackney: from 2.0.0 before 4.0.1."
}
],
"impacts": [
{
"capecId": "CAPEC-33",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-33 HTTP Request Smuggling"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 6.9,
"baseSeverity": "MEDIUM",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "HIGH",
"userInteraction": "NONE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:H/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "LOW"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-93",
"description": "CWE-93 Improper Neutralization of CRLF Sequences (\u0027CRLF Injection\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-27T15:41:24.863Z",
"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"shortName": "EEF"
},
"references": [
{
"tags": [
"vendor-advisory",
"related"
],
"url": "https://github.com/benoitc/hackney/security/advisories/GHSA-f9vr-g2g2-x9fg"
},
{
"tags": [
"related"
],
"url": "https://cna.erlef.org/cves/CVE-2026-47072.html"
},
{
"tags": [
"related"
],
"url": "https://osv.dev/vulnerability/EEF-CVE-2026-47072"
},
{
"tags": [
"patch"
],
"url": "https://github.com/benoitc/hackney/commit/52310ca807e7b48441ba0e9129171f535313fdd1"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "CRLF injection in WebSocket upgrade request in hackney",
"x_generator": {
"engine": "cvelib 1.8.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"assignerShortName": "EEF",
"cveId": "CVE-2026-47072",
"datePublished": "2026-05-25T14:00:47.852Z",
"dateReserved": "2026-05-18T17:28:08.322Z",
"dateUpdated": "2026-05-27T15:41:24.863Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-47069 (GCVE-0-2026-47069)
Vulnerability from cvelistv5 – Published: 2026-05-25 14:00 – Updated: 2026-05-27 15:40
VLAI
EPSS
VEX
Title
CRLF injection in cookie domain/path options in hackney
Summary
Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability in benoitc hackney allows HTTP Response Splitting. The hackney_cookie:setcookie/3 function in src/hackney_cookie.erl validates the Name and Value arguments against CRLF and control characters, but concatenates the domain and path options verbatim into the output iolist with no equivalent check. An attacker who controls either option — for example by supplying a Host header value forwarded as the cookie domain, or a request path forwarded as the cookie path — can inject a literal CRLF sequence and arbitrary additional Set-Cookie headers into the HTTP response.
This issue affects hackney: from 0.9.0 before 4.0.1.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-26 15:57 UTC
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
EEF
CNA
References
4 references
| URL | Tags |
|---|---|
| https://github.com/benoitc/hackney/security/advis… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-47069.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-47069 | related |
| https://github.com/benoitc/hackney/commit/8e02b99… | patch |
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-47069",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-26T15:57:10.763778Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-26T15:57:18.662Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/benoitc/hackney/security/advisories/GHSA-mp55-p8c9-rfw2"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://repo.hex.pm",
"cpes": [
"cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"hackney_cookie"
],
"packageName": "hackney",
"packageURL": "pkg:hex/hackney",
"product": "hackney",
"programFiles": [
"src/hackney_cookie.erl"
],
"programRoutines": [
{
"name": "hackney_cookie:setcookie/3"
}
],
"repo": "https://github.com/benoitc/hackney",
"vendor": "benoitc",
"versions": [
{
"lessThan": "4.0.1",
"status": "affected",
"version": "0.9.0",
"versionType": "semver"
}
]
},
{
"collectionURL": "https://github.com",
"cpes": [
"cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"hackney_cookie"
],
"packageName": "benoitc/hackney",
"packageURL": "pkg:github/benoitc/hackney",
"product": "hackney",
"programFiles": [
"src/hackney_cookie.erl"
],
"programRoutines": [
{
"name": "hackney_cookie:setcookie/3"
}
],
"repo": "https://github.com/benoitc/hackney",
"vendor": "benoitc",
"versions": [
{
"lessThan": "8e02b99c28aea1b3fa2ddc0e66f51fe5bb0ac540",
"status": "affected",
"version": "602d5c7f2ea4acbc83ed75230655d935a0750ebc",
"versionType": "git"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*",
"versionEndExcluding": "4.0.1",
"versionStartIncluding": "0.9.0",
"vulnerable": true
}
],
"negate": false,
"operator": "AND"
}
],
"operator": "AND"
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Peter Ullrich"
},
{
"lang": "en",
"type": "remediation developer",
"value": "Benoit Chesneau"
},
{
"lang": "en",
"type": "analyst",
"value": "Jonatan M\u00e4nnchen / EEF"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Improper Neutralization of CRLF Sequences (\u0027CRLF Injection\u0027) vulnerability in benoitc hackney allows HTTP Response Splitting.\u003cp\u003eThe \u003ctt\u003ehackney_cookie:setcookie/3\u003c/tt\u003e function in \u003ctt\u003esrc/hackney_cookie.erl\u003c/tt\u003e validates the \u003ctt\u003eName\u003c/tt\u003e and \u003ctt\u003eValue\u003c/tt\u003e arguments against CRLF and control characters, but concatenates the \u003ctt\u003edomain\u003c/tt\u003e and \u003ctt\u003epath\u003c/tt\u003e options verbatim into the output iolist with no equivalent check. An attacker who controls either option \u2014 for example by supplying a \u003ctt\u003eHost\u003c/tt\u003e header value forwarded as the cookie domain, or a request path forwarded as the cookie path \u2014 can inject a literal CRLF sequence and arbitrary additional \u003ctt\u003eSet-Cookie\u003c/tt\u003e headers into the HTTP response.\u003c/p\u003e\u003cp\u003eThis issue affects hackney: from 0.9.0 before 4.0.1.\u003c/p\u003e"
}
],
"value": "Improper Neutralization of CRLF Sequences (\u0027CRLF Injection\u0027) vulnerability in benoitc hackney allows HTTP Response Splitting. The hackney_cookie:setcookie/3 function in src/hackney_cookie.erl validates the Name and Value arguments against CRLF and control characters, but concatenates the domain and path options verbatim into the output iolist with no equivalent check. An attacker who controls either option \u2014 for example by supplying a Host header value forwarded as the cookie domain, or a request path forwarded as the cookie path \u2014 can inject a literal CRLF sequence and arbitrary additional Set-Cookie headers into the HTTP response.\n\nThis issue affects hackney: from 0.9.0 before 4.0.1."
}
],
"impacts": [
{
"capecId": "CAPEC-34",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-34 HTTP Response Splitting"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "LOCAL",
"baseScore": 2.1,
"baseSeverity": "LOW",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "LOW",
"userInteraction": "NONE",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "LOW"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-93",
"description": "CWE-93 Improper Neutralization of CRLF Sequences (\u0027CRLF Injection\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-27T15:40:38.975Z",
"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"shortName": "EEF"
},
"references": [
{
"tags": [
"vendor-advisory",
"related"
],
"url": "https://github.com/benoitc/hackney/security/advisories/GHSA-mp55-p8c9-rfw2"
},
{
"tags": [
"related"
],
"url": "https://cna.erlef.org/cves/CVE-2026-47069.html"
},
{
"tags": [
"related"
],
"url": "https://osv.dev/vulnerability/EEF-CVE-2026-47069"
},
{
"tags": [
"patch"
],
"url": "https://github.com/benoitc/hackney/commit/8e02b99c28aea1b3fa2ddc0e66f51fe5bb0ac540"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "CRLF injection in cookie domain/path options in hackney",
"x_generator": {
"engine": "cvelib 1.8.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"assignerShortName": "EEF",
"cveId": "CVE-2026-47069",
"datePublished": "2026-05-25T14:00:39.394Z",
"dateReserved": "2026-05-18T17:28:08.322Z",
"dateUpdated": "2026-05-27T15:40:38.975Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-46741 (GCVE-0-2026-46741)
Vulnerability from cvelistv5 – Published: 2026-06-04 15:54 – Updated: 2026-06-19 15:31
VLAI
EPSS
VEX
Title
Etsy::StatsD versions through 1.002002 for Perl allow metric injections
Summary
Etsy::StatsD versions through 1.002002 for Perl allow metric injections.
The metric names and values are not checked for newlines, colons or pipes. Metrics generated from untrusted sources could inject additional statsd metrics.
Note that the git repository contains an unreleased version with the gauge and set methods that also do not check for potential metric injections.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-04 17:40 UTC
CWE
Assigner
CPANSec
CNA
References
2 references
| URL | Tags |
|---|---|
| https://www.cve.org/CVERecord?id=CVE-2026-46719 | related |
| https://www.cve.org/CVERecord?id=CVE-2026-46720 | related |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SANBEG | Etsy::StatsD |
Affected:
0 , ≤ 1.002002
(custom)
|
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2026-46741",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-04T17:40:21.895127Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-04T17:41:32.496Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://cpan.org/modules",
"defaultStatus": "unaffected",
"packageName": "Etsy-StatsD",
"product": "Etsy::StatsD",
"programRoutines": [
{
"name": "Etsy::StatsD::timing"
},
{
"name": "Etsy::StatsD::update"
},
{
"name": "Etsy::StatsD::send"
}
],
"repo": "https://github.com/sanbeg/Etsy-Statsd",
"vendor": "SANBEG",
"versions": [
{
"lessThanOrEqual": "1.002002",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Etsy::StatsD versions through 1.002002 for Perl allow metric injections.\n\nThe metric names and values are not checked for newlines, colons or pipes. Metrics generated from untrusted sources could inject additional statsd metrics.\n\nNote that the git repository contains an unreleased version with the gauge and set methods that also do not check for potential metric injections."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-93",
"description": "CWE-93 Improper Neutralization of CRLF Sequences",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-150",
"description": "CWE-150 Improper Neutralization of Escape, Meta, or Control Sequences",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-19T15:31:51.624Z",
"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"shortName": "CPANSec"
},
"references": [
{
"tags": [
"related"
],
"url": "https://www.cve.org/CVERecord?id=CVE-2026-46719"
},
{
"tags": [
"related"
],
"url": "https://www.cve.org/CVERecord?id=CVE-2026-46720"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Etsy::StatsD versions through 1.002002 for Perl allow metric injections",
"workarounds": [
{
"lang": "en",
"value": "Ensure only trusted data is submitted to metrics."
}
],
"x_generator": {
"engine": "cpansec-cna-tool 0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"assignerShortName": "CPANSec",
"cveId": "CVE-2026-46741",
"datePublished": "2026-06-04T15:54:48.934Z",
"dateReserved": "2026-05-17T18:04:31.500Z",
"dateUpdated": "2026-06-19T15:31:51.624Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-46740 (GCVE-0-2026-46740)
Vulnerability from cvelistv5 – Published: 2026-05-26 22:48 – Updated: 2026-06-19 15:31
VLAI
EPSS
VEX
Title
Mojolicious::Plugin::Statsd versions through 0.04 for Perl allowed metric injections
Summary
Mojolicious::Plugin::Statsd versions through 0.04 for Perl allowed metric injections.
The metric names and set values were not checked for newlines, colons or pipes. Metrics generated from untrusted sources could inject additional statsd metrics.
Version 0.06 changes the module from being a statsd client to using a separate statsd client. It defaults to using a version of Net::Statsd::Tiny that fixes a similar issue (CVE-2026-46720).
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-28 14:20 UTC
CWE
Assigner
CPANSec
CNA
References
3 references
| URL | Tags |
|---|---|
| https://metacpan.org/release/RRWO/Mojolicious-Plu… | release-notes |
| https://github.com/robrwo/perl-Mojolicious-Plugin… | patch |
| https://www.cve.org/CVERecord?id=CVE-2026-46720 | related |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| RRWO | Mojolicious::Plugin::Statsd |
Affected:
0 , ≤ 0.04
(custom)
|
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2026-46740",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-28T14:20:31.875781Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-28T14:20:34.845Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://cpan.org/modules",
"defaultStatus": "unaffected",
"packageName": "Mojolicious-Plugin-Statsd",
"product": "Mojolicious::Plugin::Statsd",
"repo": "https://github.com/robrwo/perl-Mojolicious-Plugin-Statsd",
"vendor": "RRWO",
"versions": [
{
"lessThanOrEqual": "0.04",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Mojolicious::Plugin::Statsd versions through 0.04 for Perl allowed metric injections.\n\nThe metric names and set values were not checked for newlines, colons or pipes. Metrics generated from untrusted sources could inject additional statsd metrics.\n\nVersion 0.06 changes the module from being a statsd client to using a separate statsd client. It defaults to using a version of Net::Statsd::Tiny that fixes a similar issue (CVE-2026-46720)."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-93",
"description": "CWE-93 Improper Neutralization of CRLF Sequences",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-150",
"description": "CWE-150 Improper Neutralization of Escape, Meta, or Control Sequences",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-19T15:31:12.368Z",
"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"shortName": "CPANSec"
},
"references": [
{
"tags": [
"release-notes"
],
"url": "https://metacpan.org/release/RRWO/Mojolicious-Plugin-Statsd-0.06/changes"
},
{
"tags": [
"patch"
],
"url": "https://github.com/robrwo/perl-Mojolicious-Plugin-Statsd/commit/f049156982a2c0b8050f173e24a04a29ddd64853.patch"
},
{
"tags": [
"related"
],
"url": "https://www.cve.org/CVERecord?id=CVE-2026-46720"
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade to Mojolicious::Plugin::Statsd version 0.06 or later."
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Mojolicious::Plugin::Statsd versions through 0.04 for Perl allowed metric injections",
"x_generator": {
"engine": "cpansec-cna-tool 0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"assignerShortName": "CPANSec",
"cveId": "CVE-2026-46740",
"datePublished": "2026-05-26T22:48:03.747Z",
"dateReserved": "2026-05-17T18:04:31.500Z",
"dateUpdated": "2026-06-19T15:31:12.368Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-46739 (GCVE-0-2026-46739)
Vulnerability from cvelistv5 – Published: 2026-06-04 15:45 – Updated: 2026-06-19 15:30
VLAI
EPSS
VEX
Title
Net::Statsd versions before 0.13 for Perl allow metric injections
Summary
Net::Statsd versions before 0.13 for Perl allow metric injections.
The metric names are not checked for newlines, colons or pipes. Metrics generated from untrusted sources could inject additional statsd metrics.
The update_stats (used for updating counters) and gauge methods do not check that values are numeric (which would block metric injection).
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-04 17:47 UTC
CWE
Assigner
CPANSec
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/cosimo/perl5-net-statsd/pull/10 | issue-tracking |
| https://www.cve.org/CVERecord?id=CVE-2026-46719 | related |
| https://www.cve.org/CVERecord?id=CVE-2026-46720 | related |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| COSIMO | Net::Statsd |
Affected:
0 , < 0.13
(custom)
|
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2026-46739",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-04T17:47:54.945242Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-04T17:48:33.606Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://cpan.org/modules",
"defaultStatus": "unaffected",
"packageName": "Net-Statsd",
"product": "Net::Statsd",
"programRoutines": [
{
"name": "Net::Statsd::send"
},
{
"name": "Net::Statsd::timing"
},
{
"name": "Net::Statsd::update_stats"
},
{
"name": "Net::Statsd::gauge"
}
],
"repo": "https://github.com/cosimo/perl5-net-statsd",
"vendor": "COSIMO",
"versions": [
{
"lessThan": "0.13",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Net::Statsd versions before 0.13 for Perl allow metric injections.\n\nThe metric names are not checked for newlines, colons or pipes. Metrics generated from untrusted sources could inject additional statsd metrics.\n\nThe update_stats (used for updating counters) and gauge methods do not check that values are numeric (which would block metric injection)."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-93",
"description": "CWE-93 Improper Neutralization of CRLF Sequences",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-150",
"description": "CWE-150 Improper Neutralization of Escape, Meta, or Control Sequences",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-19T15:30:27.660Z",
"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"shortName": "CPANSec"
},
"references": [
{
"tags": [
"issue-tracking"
],
"url": "https://github.com/cosimo/perl5-net-statsd/pull/10"
},
{
"tags": [
"related"
],
"url": "https://www.cve.org/CVERecord?id=CVE-2026-46719"
},
{
"tags": [
"related"
],
"url": "https://www.cve.org/CVERecord?id=CVE-2026-46720"
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade to version 0.13 or later."
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Net::Statsd versions before 0.13 for Perl allow metric injections",
"workarounds": [
{
"lang": "en",
"value": "Apply the linked pull request.\n\nOtherwise ensure only trusted data is submitted to metrics."
}
],
"x_generator": {
"engine": "cpansec-cna-tool 0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"assignerShortName": "CPANSec",
"cveId": "CVE-2026-46739",
"datePublished": "2026-06-04T15:45:23.797Z",
"dateReserved": "2026-05-17T18:04:31.499Z",
"dateUpdated": "2026-06-19T15:30:27.660Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Mitigation
Implementation
Avoid using CRLF as a special sequence.
Mitigation
Implementation
Appropriately filter or quote CRLF sequences in user-controlled input.
CAPEC-15: Command Delimiters
An attack of this type exploits a programs' vulnerabilities that allows an attacker's commands to be concatenated onto a legitimate command with the intent of targeting other resources such as the file system or database. The system that uses a filter or denylist input validation, as opposed to allowlist validation is vulnerable to an attacker who predicts delimiters (or combinations of delimiters) not present in the filter or denylist. As with other injection attacks, the attacker uses the command delimiter payload as an entry point to tunnel through the application and activate additional attacks through SQL queries, shell commands, network scanning, and so on.
CAPEC-81: Web Server Logs Tampering
Web Logs Tampering attacks involve an attacker injecting, deleting or otherwise tampering with the contents of web logs typically for the purposes of masking other malicious behavior. Additionally, writing malicious data to log files may target jobs, filters, reports, and other agents that process the logs in an asynchronous attack pattern. This pattern of attack is similar to "Log Injection-Tampering-Forging" except that in this case, the attack is targeting the logs of the web server and not the application.