CVE-2026-41577 MEDIUM

CVE-2026-41577: authentik: SAML source does not validate Conditions, timing, or audience on assertions

Vendor Goauthentik
Product authentik
Weakness CWE-345
Published June 2, 2026
Last update June 3, 2026
View on NVD All CVEs

CVSS base score

6.9/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS 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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

June 2, 2026 CVE published
June 3, 2026 Record updated