{
  "containers": {
    "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": "2026-08-31T02:29:14.304Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}