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Vulnerability record · CVE-2026-25922 · published 12 February 2026

CVE-2026-25922: Goauthentik authentik improper authentication vulnerability

Goauthentik · Authentik

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.

8.8 CVSS 3.1 High EPSS 0.31% · top 78.6% CWE-287 · Improper authenticationCWE-347 · Improper verification of cryptographic signature
8.8CVSS 3.1 base score
0.31%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/goauthentik/authentik/releases/tag/version%2F2025.10.4 ProductRelease Notes
https://github.com/goauthentik/authentik/releases/tag/version%2F2025.12.4 ProductRelease Notes
https://github.com/goauthentik/authentik/releases/tag/version%2F2025.8.6 ProductRelease Notes
https://github.com/goauthentik/authentik/security/advisories/GHSA-jh35-c4cc-wjm4 MitigationVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-25922), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.