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CVE-2026-25922

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CVE-2026-25922

Published: Feb 12, 2026

Modified: Feb 17, 2026

PUBLISHED

CVSS v3.1

8.8

HIGH

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.

VendorProductVersions

goauthentik

authentik

affected
< 2025.8.6
affected
>= 2025.10.0-rc1, < 2025.10.4
affected
>= 2025.10.0-rc1, < 2025.12.4

Weaknesses (CWE)

CWE-287
CWE-347

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

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