CVE-2026-81852 (GCVE-0-2026-81852)
Vulnerability from cvelistv5
Published
2026-08-31 02:29
Modified
2026-08-31 15:59
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-330 - Use of Insufficiently Random Values
Summary
Use of Insufficiently Random Values vulnerability in ash-project ash_admin ships a hardcoded, publicly known CSP nonce, defeating nonce-based Content-Security-Policy protection.
When mounted without :csp_nonce_assign_key, AshAdmin.Router.ash_admin/2 defaulted the img, style, and script nonces to the literal constant ash_admin-Ed55GFnX, which AshAdmin.Layouts wrote verbatim into the nonce attribute of its inline <style> and <script> tags on every response. The value is a compile-time constant published in the repository and is never rotated per request. If an application's CSP script-src allow-lists that documented default, any HTML-injection sink on an admin page can reuse the known nonce to run inline scripts the policy was meant to block. The fix generates a fresh random nonce per request.
This issue affects ash_admin: from 0.10.8 before 1.3.1.
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| ash-project | ash_admin |
Version: 0.10.8 ≤ cpe:2.3:a:ash-project:ash_admin:*:*:*:*:*:*:*:* |
|||||||
|
|||||||||
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-81852",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-31T15:59:13.805623Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-08-31T15:59:44.933Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/ash-project/ash_admin/security/advisories/GHSA-whfj-rrrp-j597"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://repo.hex.pm",
"cpes": [
"cpe:2.3:a:ash-project:ash_admin:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"\u0027Elixir.AshAdmin.Router\u0027",
"\u0027Elixir.AshAdmin.Layouts\u0027"
],
"packageName": "ash_admin",
"packageURL": "pkg:hex/ash_admin",
"product": "ash_admin",
"programFiles": [
"lib/ash_admin/router.ex",
"lib/ash_admin/components/layouts.ex"
],
"repo": "https://github.com/ash-project/ash_admin",
"vendor": "ash-project",
"versions": [
{
"lessThan": "1.3.1",
"status": "affected",
"version": "0.10.8",
"versionType": "semver"
}
]
},
{
"collectionURL": "https://github.com",
"cpes": [
"cpe:2.3:a:ash-project:ash_admin:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"\u0027Elixir.AshAdmin.Router\u0027",
"\u0027Elixir.AshAdmin.Layouts\u0027"
],
"packageName": "ash-project/ash_admin",
"packageURL": "pkg:github/ash-project/ash_admin",
"product": "ash_admin",
"programFiles": [
"lib/ash_admin/router.ex",
"lib/ash_admin/components/layouts.ex"
],
"repo": "https://github.com/ash-project/ash_admin",
"vendor": "ash-project",
"versions": [
{
"lessThan": "bc7a1cdf873b16971a8efec35d085f8bb706314f",
"status": "affected",
"version": "99b8daed7b2f79d82fcd9e89338d41b0e1564aa7",
"versionType": "git"
}
]
}
],
"configurations": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eThe application mounts AshAdmin without \u003ccode\u003e:csp_nonce_assign_key\u003c/code\u003e and enforces a nonce-based CSP whose \u003ccode\u003escript-src\u003c/code\u003e allow-lists the default \u003ccode\u003eash_admin-Ed55GFnX\u003c/code\u003e value, and has a separate HTML-injection sink on an admin page.\u003c/p\u003e"
},
{
"base64": false,
"type": "text/markdown",
"value": "The application mounts AshAdmin without `:csp_nonce_assign_key` and enforces a nonce-based CSP whose `script-src` allow-lists the default `ash_admin-Ed55GFnX` value, and has a separate HTML-injection sink on an admin page."
}
],
"value": "The application mounts AshAdmin without :csp_nonce_assign_key and enforces a nonce-based CSP whose script-src allow-lists the default ash_admin-Ed55GFnX value, and has a separate HTML-injection sink on an admin page."
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:ash-project:ash_admin:*:*:*:*:*:*:*:*",
"versionEndExcluding": "1.3.1",
"versionStartIncluding": "0.10.8",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Peter Ullrich"
},
{
"lang": "en",
"type": "reporter",
"value": "Peter Ullrich"
},
{
"lang": "en",
"type": "remediation developer",
"value": "Zach Daniel / Ash Project"
},
{
"lang": "en",
"type": "coordinator",
"value": "Jonatan M\u00e4nnchen / EEF"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eUse of Insufficiently Random Values vulnerability in ash-project ash_admin ships a hardcoded, publicly known CSP nonce, defeating nonce-based Content-Security-Policy protection.\u003c/p\u003e\n\u003cp\u003eWhen mounted without \u003ccode\u003e:csp_nonce_assign_key\u003c/code\u003e, \u003ccode\u003eAshAdmin.Router.ash_admin/2\u003c/code\u003e defaulted the img, style, and script nonces to the literal constant \u003ccode\u003eash_admin-Ed55GFnX\u003c/code\u003e, which \u003ccode\u003eAshAdmin.Layouts\u003c/code\u003e wrote verbatim into the \u003ccode\u003enonce\u003c/code\u003e attribute of its inline \u003ccode\u003e\u0026lt;style\u0026gt;\u003c/code\u003e and \u003ccode\u003e\u0026lt;script\u0026gt;\u003c/code\u003e tags on every response. The value is a compile-time constant published in the repository and is never rotated per request. If an application\u0027s CSP \u003ccode\u003escript-src\u003c/code\u003e allow-lists that documented default, any HTML-injection sink on an admin page can reuse the known nonce to run inline scripts the policy was meant to block. The fix generates a fresh random nonce per request.\u003c/p\u003e\n\u003cp\u003eThis issue affects ash_admin: from 0.10.8 before 1.3.1.\u003c/p\u003e"
},
{
"base64": false,
"type": "text/markdown",
"value": "Use of Insufficiently Random Values vulnerability in ash-project ash_admin ships a hardcoded, publicly known CSP nonce, defeating nonce-based Content-Security-Policy protection.\n\nWhen mounted without `:csp_nonce_assign_key`, `AshAdmin.Router.ash_admin/2` defaulted the img, style, and script nonces to the literal constant `ash_admin-Ed55GFnX`, which `AshAdmin.Layouts` wrote verbatim into the `nonce` attribute of its inline `\u003cstyle\u003e` and `\u003cscript\u003e` tags on every response. The value is a compile-time constant published in the repository and is never rotated per request. If an application\u0027s CSP `script-src` allow-lists that documented default, any HTML-injection sink on an admin page can reuse the known nonce to run inline scripts the policy was meant to block. The fix generates a fresh random nonce per request.\n\nThis issue affects ash_admin: from 0.10.8 before 1.3.1."
}
],
"value": "Use of Insufficiently Random Values vulnerability in ash-project ash_admin ships a hardcoded, publicly known CSP nonce, defeating nonce-based Content-Security-Policy protection.\n\nWhen mounted without :csp_nonce_assign_key, AshAdmin.Router.ash_admin/2 defaulted the img, style, and script nonces to the literal constant ash_admin-Ed55GFnX, which AshAdmin.Layouts wrote verbatim into the nonce attribute of its inline \u003cstyle\u003e and \u003cscript\u003e tags on every response. The value is a compile-time constant published in the repository and is never rotated per request. If an application\u0027s CSP script-src allow-lists that documented default, any HTML-injection sink on an admin page can reuse the known nonce to run inline scripts the policy was meant to block. The fix generates a fresh random nonce per request.\n\nThis issue affects ash_admin: from 0.10.8 before 1.3.1."
}
],
"impacts": [
{
"capecId": "CAPEC-63",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-63 Cross-Site Scripting (XSS)"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 2.1,
"baseSeverity": "LOW",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "ACTIVE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "LOW",
"vulnIntegrityImpact": "LOW",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-330",
"description": "CWE-330 Use of Insufficiently Random Values",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-31T02:29:14.304Z",
"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"shortName": "EEF"
},
"references": [
{
"tags": [
"vendor-advisory",
"related"
],
"url": "https://github.com/ash-project/ash_admin/security/advisories/GHSA-whfj-rrrp-j597"
},
{
"tags": [
"related"
],
"url": "https://cna.erlef.org/cves/CVE-2026-81852.html"
},
{
"tags": [
"related"
],
"url": "https://osv.dev/vulnerability/EEF-CVE-2026-81852"
},
{
"tags": [
"patch"
],
"url": "https://github.com/ash-project/ash_admin/commit/bc7a1cdf873b16971a8efec35d085f8bb706314f"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "AshAdmin ships a hardcoded CSP nonce, allowing nonce-based CSP bypass"
}
},
"cveMetadata": {
"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"assignerShortName": "EEF",
"cveId": "CVE-2026-81852",
"datePublished": "2026-08-31T02:29:14.304Z",
"dateReserved": "2026-08-30T23:15:02.378Z",
"dateUpdated": "2026-08-31T15:59:44.933Z",
"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-2026-81852\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-08-31T15:59:13.805623Z\"}}}], \"references\": [{\"url\": \"https://github.com/ash-project/ash_admin/security/advisories/GHSA-whfj-rrrp-j597\", \"tags\": [\"exploit\"]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-08-31T15:59:24.427Z\"}}], \"cna\": {\"title\": \"AshAdmin ships a hardcoded CSP nonce, allowing nonce-based CSP bypass\", \"source\": {\"discovery\": \"EXTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Peter Ullrich\"}, {\"lang\": \"en\", \"type\": \"reporter\", \"value\": \"Peter Ullrich\"}, {\"lang\": \"en\", \"type\": \"remediation developer\", \"value\": \"Zach Daniel / Ash Project\"}, {\"lang\": \"en\", \"type\": \"coordinator\", \"value\": \"Jonatan M\\u00e4nnchen / EEF\"}], \"impacts\": [{\"capecId\": \"CAPEC-63\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-63 Cross-Site Scripting (XSS)\"}]}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"Safety\": \"NOT_DEFINED\", \"version\": \"4.0\", \"Recovery\": \"NOT_DEFINED\", \"baseScore\": 2.1, \"Automatable\": \"NOT_DEFINED\", \"attackVector\": \"NETWORK\", \"baseSeverity\": \"LOW\", \"valueDensity\": \"NOT_DEFINED\", \"vectorString\": \"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N\", \"providerUrgency\": \"NOT_DEFINED\", \"userInteraction\": \"ACTIVE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"PRESENT\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"LOW\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"LOW\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"cpes\": [\"cpe:2.3:a:ash-project:ash_admin:*:*:*:*:*:*:*:*\"], \"repo\": \"https://github.com/ash-project/ash_admin\", \"vendor\": \"ash-project\", \"modules\": [\"\u0027Elixir.AshAdmin.Router\u0027\", \"\u0027Elixir.AshAdmin.Layouts\u0027\"], \"product\": \"ash_admin\", \"versions\": [{\"status\": \"affected\", \"version\": \"0.10.8\", \"lessThan\": \"1.3.1\", \"versionType\": \"semver\"}], \"packageURL\": \"pkg:hex/ash_admin\", \"packageName\": \"ash_admin\", \"programFiles\": [\"lib/ash_admin/router.ex\", \"lib/ash_admin/components/layouts.ex\"], \"collectionURL\": \"https://repo.hex.pm\", \"defaultStatus\": \"unaffected\"}, {\"cpes\": [\"cpe:2.3:a:ash-project:ash_admin:*:*:*:*:*:*:*:*\"], \"repo\": \"https://github.com/ash-project/ash_admin\", \"vendor\": \"ash-project\", \"modules\": [\"\u0027Elixir.AshAdmin.Router\u0027\", \"\u0027Elixir.AshAdmin.Layouts\u0027\"], \"product\": \"ash_admin\", \"versions\": [{\"status\": \"affected\", \"version\": \"99b8daed7b2f79d82fcd9e89338d41b0e1564aa7\", \"lessThan\": \"bc7a1cdf873b16971a8efec35d085f8bb706314f\", \"versionType\": \"git\"}], \"packageURL\": \"pkg:github/ash-project/ash_admin\", \"packageName\": \"ash-project/ash_admin\", \"programFiles\": [\"lib/ash_admin/router.ex\", \"lib/ash_admin/components/layouts.ex\"], \"collectionURL\": \"https://github.com\", \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://github.com/ash-project/ash_admin/security/advisories/GHSA-whfj-rrrp-j597\", \"tags\": [\"vendor-advisory\", \"related\"]}, {\"url\": \"https://cna.erlef.org/cves/CVE-2026-81852.html\", \"tags\": [\"related\"]}, {\"url\": \"https://osv.dev/vulnerability/EEF-CVE-2026-81852\", \"tags\": [\"related\"]}, {\"url\": \"https://github.com/ash-project/ash_admin/commit/bc7a1cdf873b16971a8efec35d085f8bb706314f\", \"tags\": [\"patch\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Use of Insufficiently Random Values vulnerability in ash-project ash_admin ships a hardcoded, publicly known CSP nonce, defeating nonce-based Content-Security-Policy protection.\\n\\nWhen mounted without :csp_nonce_assign_key, AshAdmin.Router.ash_admin/2 defaulted the img, style, and script nonces to the literal constant ash_admin-Ed55GFnX, which AshAdmin.Layouts wrote verbatim into the nonce attribute of its inline \u003cstyle\u003e and \u003cscript\u003e tags on every response. The value is a compile-time constant published in the repository and is never rotated per request. If an application\u0027s CSP script-src allow-lists that documented default, any HTML-injection sink on an admin page can reuse the known nonce to run inline scripts the policy was meant to block. The fix generates a fresh random nonce per request.\\n\\nThis issue affects ash_admin: from 0.10.8 before 1.3.1.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eUse of Insufficiently Random Values vulnerability in ash-project ash_admin ships a hardcoded, publicly known CSP nonce, defeating nonce-based Content-Security-Policy protection.\u003c/p\u003e\\n\u003cp\u003eWhen mounted without \u003ccode\u003e:csp_nonce_assign_key\u003c/code\u003e, \u003ccode\u003eAshAdmin.Router.ash_admin/2\u003c/code\u003e defaulted the img, style, and script nonces to the literal constant \u003ccode\u003eash_admin-Ed55GFnX\u003c/code\u003e, which \u003ccode\u003eAshAdmin.Layouts\u003c/code\u003e wrote verbatim into the \u003ccode\u003enonce\u003c/code\u003e attribute of its inline \u003ccode\u003e\u0026lt;style\u0026gt;\u003c/code\u003e and \u003ccode\u003e\u0026lt;script\u0026gt;\u003c/code\u003e tags on every response. The value is a compile-time constant published in the repository and is never rotated per request. If an application\u0027s CSP \u003ccode\u003escript-src\u003c/code\u003e allow-lists that documented default, any HTML-injection sink on an admin page can reuse the known nonce to run inline scripts the policy was meant to block. The fix generates a fresh random nonce per request.\u003c/p\u003e\\n\u003cp\u003eThis issue affects ash_admin: from 0.10.8 before 1.3.1.\u003c/p\u003e\", \"base64\": false}, {\"type\": \"text/markdown\", \"value\": \"Use of Insufficiently Random Values vulnerability in ash-project ash_admin ships a hardcoded, publicly known CSP nonce, defeating nonce-based Content-Security-Policy protection.\\n\\nWhen mounted without `:csp_nonce_assign_key`, `AshAdmin.Router.ash_admin/2` defaulted the img, style, and script nonces to the literal constant `ash_admin-Ed55GFnX`, which `AshAdmin.Layouts` wrote verbatim into the `nonce` attribute of its inline `\u003cstyle\u003e` and `\u003cscript\u003e` tags on every response. The value is a compile-time constant published in the repository and is never rotated per request. If an application\u0027s CSP `script-src` allow-lists that documented default, any HTML-injection sink on an admin page can reuse the known nonce to run inline scripts the policy was meant to block. The fix generates a fresh random nonce per request.\\n\\nThis issue affects ash_admin: from 0.10.8 before 1.3.1.\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-330\", \"description\": \"CWE-330 Use of Insufficiently Random Values\"}]}], \"configurations\": [{\"lang\": \"en\", \"value\": \"The application mounts AshAdmin without :csp_nonce_assign_key and enforces a nonce-based CSP whose script-src allow-lists the default ash_admin-Ed55GFnX value, and has a separate HTML-injection sink on an admin page.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eThe application mounts AshAdmin without \u003ccode\u003e:csp_nonce_assign_key\u003c/code\u003e and enforces a nonce-based CSP whose \u003ccode\u003escript-src\u003c/code\u003e allow-lists the default \u003ccode\u003eash_admin-Ed55GFnX\u003c/code\u003e value, and has a separate HTML-injection sink on an admin page.\u003c/p\u003e\", \"base64\": false}, {\"type\": \"text/markdown\", \"value\": \"The application mounts AshAdmin without `:csp_nonce_assign_key` and enforces a nonce-based CSP whose `script-src` allow-lists the default `ash_admin-Ed55GFnX` value, and has a separate HTML-injection sink on an admin page.\", \"base64\": false}]}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:ash-project:ash_admin:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"1.3.1\", \"versionStartIncluding\": \"0.10.8\"}], \"operator\": \"OR\"}], \"operator\": \"AND\"}], \"providerMetadata\": {\"orgId\": \"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\", \"shortName\": \"EEF\", \"dateUpdated\": \"2026-08-31T02:29:14.304Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-81852\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-31T15:59:44.933Z\", \"dateReserved\": \"2026-08-30T23:15:02.378Z\", \"assignerOrgId\": \"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\", \"datePublished\": \"2026-08-31T02:29:14.304Z\", \"assignerShortName\": \"EEF\"}",
"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…