CVE-2026-44256 (GCVE-0-2026-44256)
Vulnerability from cvelistv5
Published
2026-08-19 16:21
Modified
2026-08-19 18:18
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-117 - Improper Output Neutralization for Logs
Summary
Wazuh is a free and open source platform used for threat prevention, detection, and response. From 4.4.0 until 4.14.6 and 5.0.0-beta2, api/api/middlewares.py decodes the Basic authentication username before credential validation and passes it to the access logger without neutralizing control characters. api/api/alogging.py interpolates that value into the plain-text API log. An unauthenticated attacker can include carriage returns or line feeds in the username to forge entries, obscure activity, or poison systems that consume the plain-text audit log. The JSON log format is not affected because JSON serialization escapes these characters. This issue is fixed in versions 4.14.6 and 5.0.0-beta2.
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-44256",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-19T18:17:23.310124Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-19T18:18:11.834Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "wazuh",
"vendor": "wazuh",
"versions": [
{
"status": "affected",
"version": "\u003e= 4.4.0, \u003c 4.14.6"
},
{
"status": "affected",
"version": "\u003e= 5.0.0-beta1, \u003c 5.0.0-beta2"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Wazuh is a free and open source platform used for threat prevention, detection, and response. From 4.4.0 until 4.14.6 and 5.0.0-beta2, api/api/middlewares.py decodes the Basic authentication username before credential validation and passes it to the access logger without neutralizing control characters. api/api/alogging.py interpolates that value into the plain-text API log. An unauthenticated attacker can include carriage returns or line feeds in the username to forge entries, obscure activity, or poison systems that consume the plain-text audit log. The JSON log format is not affected because JSON serialization escapes these characters. This issue is fixed in versions 4.14.6 and 5.0.0-beta2."
}
],
"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"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-117",
"description": "CWE-117: Improper Output Neutralization for Logs",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-19T16:21:49.920Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/wazuh/wazuh/security/advisories/GHSA-c3m6-fp2h-wmr4",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/wazuh/wazuh/security/advisories/GHSA-c3m6-fp2h-wmr4"
},
{
"name": "https://github.com/wazuh/wazuh/pull/35866",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/wazuh/wazuh/pull/35866"
},
{
"name": "https://github.com/wazuh/wazuh/commit/cddf3fd16b0f945b28eb9c27714de3cc344e0926",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/wazuh/wazuh/commit/cddf3fd16b0f945b28eb9c27714de3cc344e0926"
},
{
"name": "https://github.com/wazuh/wazuh/releases/tag/v4.14.6",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/wazuh/wazuh/releases/tag/v4.14.6"
},
{
"name": "https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2"
}
],
"source": {
"advisory": "GHSA-c3m6-fp2h-wmr4",
"discovery": "UNKNOWN"
},
"title": "Wazuh: CRLF Log Injection via Unsanitized Basic-Auth Username"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-44256",
"datePublished": "2026-08-19T16:21:49.920Z",
"dateReserved": "2026-05-05T16:33:55.844Z",
"dateUpdated": "2026-08-19T18:18:11.834Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-44256\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-08-19T18:17:23.310124Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-08-19T18:17:24.322Z\"}}], \"cna\": {\"title\": \"Wazuh: CRLF Log Injection via Unsanitized Basic-Auth Username\", \"source\": {\"advisory\": \"GHSA-c3m6-fp2h-wmr4\", \"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.3, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N\", \"integrityImpact\": \"LOW\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"wazuh\", \"product\": \"wazuh\", \"versions\": [{\"status\": \"affected\", \"version\": \"\u003e= 4.4.0, \u003c 4.14.6\"}, {\"status\": \"affected\", \"version\": \"\u003e= 5.0.0-beta1, \u003c 5.0.0-beta2\"}]}], \"references\": [{\"url\": \"https://github.com/wazuh/wazuh/security/advisories/GHSA-c3m6-fp2h-wmr4\", \"name\": \"https://github.com/wazuh/wazuh/security/advisories/GHSA-c3m6-fp2h-wmr4\", \"tags\": [\"x_refsource_CONFIRM\"]}, {\"url\": \"https://github.com/wazuh/wazuh/pull/35866\", \"name\": \"https://github.com/wazuh/wazuh/pull/35866\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/wazuh/wazuh/commit/cddf3fd16b0f945b28eb9c27714de3cc344e0926\", \"name\": \"https://github.com/wazuh/wazuh/commit/cddf3fd16b0f945b28eb9c27714de3cc344e0926\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/wazuh/wazuh/releases/tag/v4.14.6\", \"name\": \"https://github.com/wazuh/wazuh/releases/tag/v4.14.6\", \"tags\": [\"x_refsource_MISC\"]}, {\"url\": \"https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2\", \"name\": \"https://github.com/wazuh/wazuh/releases/tag/v5.0.0-beta2\", \"tags\": [\"x_refsource_MISC\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Wazuh is a free and open source platform used for threat prevention, detection, and response. From 4.4.0 until 4.14.6 and 5.0.0-beta2, api/api/middlewares.py decodes the Basic authentication username before credential validation and passes it to the access logger without neutralizing control characters. api/api/alogging.py interpolates that value into the plain-text API log. An unauthenticated attacker can include carriage returns or line feeds in the username to forge entries, obscure activity, or poison systems that consume the plain-text audit log. The JSON log format is not affected because JSON serialization escapes these characters. This issue is fixed in versions 4.14.6 and 5.0.0-beta2.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-117\", \"description\": \"CWE-117: Improper Output Neutralization for Logs\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2026-08-19T16:21:49.920Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-44256\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-19T18:18:11.834Z\", \"dateReserved\": \"2026-05-05T16:33:55.844Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-08-19T16:21:49.920Z\", \"assignerShortName\": \"GitHub_M\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…