Description
authentik is an open-source identity provider. Prior to versions 2025.12.5 and 2026.2.3, the SAML source response processor (ResponseProcessor.parse()) does not validate the Conditions element on assertions. NotBefore, NotOnOrAfter, and AudienceRestriction are all ignored. This allows replay of expired assertions and acceptance of assertions intended for other service providers. This issue has been patched in versions 2025.12.5 and 2026.2.3.
Published: 2026-06-02
Score: 6.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Thu, 04 Jun 2026 19:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:goauthentik:authentik:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}


Wed, 03 Jun 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 03 Jun 2026 04:45:00 +0000

Type Values Removed Values Added
First Time appeared Goauthentik
Goauthentik authentik
Vendors & Products Goauthentik
Goauthentik authentik

Wed, 03 Jun 2026 02:30:00 +0000

Type Values Removed Values Added
Description authentik is an open-source identity provider. Prior to versions 2025.12.5 and 2026.2.3, the SAML source response processor (ResponseProcessor.parse()) does not validate the Conditions element on assertions. NotBefore, NotOnOrAfter, and AudienceRestriction are all ignored. This allows replay of expired assertions and acceptance of assertions intended for other service providers. This issue has been patched in versions 2025.12.5 and 2026.2.3.
Title authentik: SAML source does not validate Conditions, timing, or audience on assertions
Weaknesses CWE-345
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N'}


Subscriptions

Goauthentik Authentik
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-06-03T13:18:23.260Z

Reserved: 2026-04-21T14:15:21.958Z

Link: CVE-2026-41577

cve-icon Vulnrichment

Updated: 2026-06-03T13:18:11.915Z

cve-icon NVD

Status : Analyzed

Published: 2026-06-02T20:16:36.117

Modified: 2026-06-04T19:44:27.653

Link: CVE-2026-41577

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-03T05:15:26Z

Weaknesses