{"api_version":"1","generated_at":"2026-08-31T03:54:27+00:00","cve":"CVE-2026-81852","urls":{"html":"https://cve.report/CVE-2026-81852","api":"https://cve.report/api/cve/CVE-2026-81852.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-81852","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-81852"},"summary":{"title":"AshAdmin ships a hardcoded CSP nonce, allowing nonce-based CSP bypass","description":"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 <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.\n\nThis issue affects ash_admin: from 0.10.8 before 1.3.1.","state":"PUBLISHED","assigner":"EEF","published_at":"2026-08-31 03:16:42","updated_at":"2026-08-31 03:16:42"},"problem_types":["CWE-330","CWE-330 CWE-330 Use of Insufficiently Random 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Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-81852","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"ash-project","product":"ash_admin","version":"affected 0.10.8 1.3.1 semver","platforms":[]},{"source":"CNA","vendor":"ash-project","product":"ash_admin","version":"affected 99b8daed7b2f79d82fcd9e89338d41b0e1564aa7 bc7a1cdf873b16971a8efec35d085f8bb706314f git","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"Peter Ullrich","lang":"en"},{"source":"CNA","value":"Peter Ullrich","lang":"en"},{"source":"CNA","value":"Zach Daniel / Ash Project","lang":"en"},{"source":"CNA","value":"Jonatan Männchen / EEF","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"collectionURL":"https://repo.hex.pm","cpes":["cpe:2.3:a:ash-project:ash_admin:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.AshAdmin.Router'","'Elixir.AshAdmin.Layouts'"],"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":["'Elixir.AshAdmin.Router'","'Elixir.AshAdmin.Layouts'"],"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":"<p>The application mounts AshAdmin without <code>:csp_nonce_assign_key</code> and enforces a nonce-based CSP whose <code>script-src</code> allow-lists the default <code>ash_admin-Ed55GFnX</code> value, and has a separate HTML-injection sink on an admin page.</p>"},{"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 Männchen / EEF"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>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.</p>\n<p>When mounted without <code>:csp_nonce_assign_key</code>, <code>AshAdmin.Router.ash_admin/2</code> defaulted the img, style, and script nonces to the literal constant <code>ash_admin-Ed55GFnX</code>, which <code>AshAdmin.Layouts</code> wrote verbatim into the <code>nonce</code> attribute of its inline <code>&lt;style&gt;</code> and <code>&lt;script&gt;</code> 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 <code>script-src</code> 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.</p>\n<p>This issue affects ash_admin: from 0.10.8 before 1.3.1.</p>"},{"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 `<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.\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 <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.\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":"2026-08-31T02:29:14.304Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-31 03:16:42","lastModifiedDate":"2026-08-31 03:16:42","problem_types":["CWE-330","CWE-330 CWE-330 Use of Insufficiently Random Values"],"metrics":{"cvssMetricV40":[{"source":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","type":"Secondary","cvssData":{"version":"4.0","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":2.1,"baseSeverity":"LOW","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"ACTIVE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"81852","Ordinal":"1","Title":"AshAdmin ships a hardcoded CSP nonce, allowing nonce-based CSP b","CVE":"CVE-2026-81852","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"81852","Ordinal":"1","NoteData":"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 <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.\n\nThis issue affects ash_admin: from 0.10.8 before 1.3.1.","Type":"Description","Title":"AshAdmin ships a hardcoded CSP nonce, allowing nonce-based CSP b"}]}}}