Vulnerability · Published Feb 12, 2026 · Assigned by GitHub_M
CVE-2026-25922authentik has a Signature Verification Bypass via SAML Assertion Wrapping
High 8.8
In plain English
A high-severity improper authentication in authentik from goauthentik. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| goauthentik | authentik | < 2025.8.6>= 2025.10.0-rc1, < 2025.10.4>= 2025.10.0-rc1, < 2025.12.4 |
Weakness: CWE-287, CWE-347 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- https://github.com/goauthentik/authentik/security/advisories/GHSA-jh35-c4cc-wjm4 x_refsource_CONFIRM
- https://github.com/goauthentik/authentik/releases/tag/version%2F2025.10.4 x_refsource_MISC
- https://github.com/goauthentik/authentik/releases/tag/version%2F2025.12.4 x_refsource_MISC
- https://github.com/goauthentik/authentik/releases/tag/version%2F2025.8.6 x_refsource_MISC