Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Goauthentik | Authentik | < 2025.8.6 |
Related Weaknesses (CWE)
References
- https://github.com/goauthentik/authentik/releases/tag/version%2F2025.10.4ProductRelease Notes
- https://github.com/goauthentik/authentik/releases/tag/version%2F2025.12.4ProductRelease Notes
- https://github.com/goauthentik/authentik/releases/tag/version%2F2025.8.6ProductRelease Notes
- https://github.com/goauthentik/authentik/security/advisories/GHSA-jh35-c4cc-wjm4MitigationVendor Advisory
FAQ
What is CVE-2026-25922?
CVE-2026-25922 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 enabl...
How severe is CVE-2026-25922?
CVE-2026-25922 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-25922?
Check the references section above for vendor advisories and patch information. Affected products include: Goauthentik Authentik.