{"id":"CVE-2026-25922","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-25922","generatedAt":"2026-10-28T07:04:23.806Z","title":"Prior to 2025.8.6, 2025.10.4, and 2025.12.4, when using a SAML Source that has the option Verify Assertion Signature under Verification Certificate enabled and not Verify Response Signature, or does not have the Encryption Certificate setting under…","description":"authentik is an open-source identity provider. Prior to 2025.8.6, 2025.10.4, and 2025.12.4, when using a SAML Source that has the option Verify Assertion Signature under Verification Certificate enabled and not Verify Response Signature, or does not have the Encryption Certificate setting under Advanced Protocol settings configured, it was possible for an attacker to inject a malicious assertion before the signed assertion that authentik would use instead. authentik 2025.8.6, 2025.10.4, and 2025.12.4 fix this issue.","published":"2026-02-12T20:16:11.000Z","lastModified":"2026-06-17T10:25:26.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-287","CWE-347"],"affected":["goauthentik/authentik"],"epss":{"score":0.00241,"percentile":0.15206,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.24%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/goauthentik/authentik/releases/tag/version%2F2025.10.4","tags":["Product","Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/goauthentik/authentik/releases/tag/version%2F2025.12.4","tags":["Product","Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/goauthentik/authentik/releases/tag/version%2F2025.8.6","tags":["Product","Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/goauthentik/authentik/security/advisories/GHSA-jh35-c4cc-wjm4","tags":["Mitigation","Vendor Advisory"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-25922","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}