CVE-2026-25922 HIGH

CVE-2026-25922: authentik has a Signature Verification Bypass via SAML Assertion Wrapping

Vendor Goauthentik
Product authentik
Weakness CWE-287 · Improper authentication
Published February 12, 2026
Last update February 17, 2026
View on NVD All CVEs

CVSS base score

8.8/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

February 12, 2026 CVE published
February 17, 2026 Record updated