{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-25748","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-02-05T18:35:52.356Z","datePublished":"2026-02-12T19:36:45.631Z","dateUpdated":"2026-02-17T15:53:01.301Z"},"containers":{"cna":{"title":"authentik has a forward authentication bypass with broken cookie","problemTypes":[{"descriptions":[{"cweId":"CWE-287","lang":"en","description":"CWE-287: Improper Authentication","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.6,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/goauthentik/authentik/security/advisories/GHSA-fj56-5763-j8pp","tags":["x_refsource_CONFIRM"],"url":"https://github.com/goauthentik/authentik/security/advisories/GHSA-fj56-5763-j8pp"},{"name":"https://github.com/goauthentik/authentik/releases/tag/version%2F2025.10.4","tags":["x_refsource_MISC"],"url":"https://github.com/goauthentik/authentik/releases/tag/version%2F2025.10.4"},{"name":"https://github.com/goauthentik/authentik/releases/tag/version%2F2025.12.4","tags":["x_refsource_MISC"],"url":"https://github.com/goauthentik/authentik/releases/tag/version%2F2025.12.4"}],"affected":[{"vendor":"goauthentik","product":"authentik","versions":[{"version":">= 2025.10.0-rc1, < 2025.10.4","status":"affected"},{"version":">= 2025.10.0-rc1, < 2025.12.4","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-02-12T19:36:45.631Z"},"descriptions":[{"lang":"en","value":"authentik is an open-source identity provider. Prior to 2025.10.4 and 2025.12.4, with a malformed cookie it was possible to bypass authentication when using forward authentication in the authentik Proxy Provider when used in conjunction with Traefik or Caddy as reverse proxy. When a malicious cookie was used, none of the authentik-specific X-Authentik-* headers were set which depending on application can grant access to an attacker. authentik 2025.10.4 and 2025.12.4 fix this issue."}],"source":{"advisory":"GHSA-fj56-5763-j8pp","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-17T15:52:54.989237Z","id":"CVE-2026-25748","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-02-17T15:53:01.301Z"}}]}}