CVE-2026-25922

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 Reserved 2026-02-09 | Published 2026-02-12 | Updated 2026-02-17 | Assigner GitHub_M

Problem types

CWE-287: Improper Authentication

CWE-347: Improper Verification of Cryptographic Signature

Product status

References

github.com/...hentik/security/advisories/GHSA-jh35-c4cc-wjm4

github.com/...entik/authentik/releases/tag/version/2025.10.4

github.com/...entik/authentik/releases/tag/version/2025.12.4

github.com/...hentik/authentik/releases/tag/version/2025.8.6

cve.org (CVE-2026-25922)

nvd.nist.gov (CVE-2026-25922)

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