CVE-2026-25922

Name: CVE-2026-25922
Creator: NVD / NIST
Published: 2026-02-12T20:16:10.91+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.17%

Last modified Jun 17, 2026

CVE-2026-25922 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.17%

6.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Goauthentik	Authentik	< 2025.8.6
Goauthentik	Authentik	>= 2025.10.0, < 2025.10.4
Goauthentik	Authentik	>= 2025.12.0, < 2025.12.4

References

https://github.com/goauthentik/authentik/releases/tag/version%2F2025.10.4Product, Release Notes
https://github.com/goauthentik/authentik/releases/tag/version%2F2025.12.4Product, Release Notes
https://github.com/goauthentik/authentik/releases/tag/version%2F2025.8.6Product, Release Notes
https://github.com/goauthentik/authentik/security/advisories/GHSA-jh35-c4cc-wjm4Mitigation, Vendor Advisory

Timeline

Published: Feb 12, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-25922?

How severe is CVE-2026-25922?

CVE-2026-25922 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.

How do I fix CVE-2026-25922?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-25922?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST