CyberRota Analysis
AI-GeneratedThe vulnerability affects the SAML Source component of authentik, an open-source identity provider, allowing unauthenticated actors to exploit valid assertions for unauthorized authentication. This could lead to unauthorized access by replaying assertions intended for other service providers or those previously accepted. Organizations using authentik with SAML Sources should prioritize upgrading to versions 2026.2.7, 2026.5.7, or 2026.8.2 to mitigate this risk.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
authentik is an open-source identity provider. Prior to 2026.2.7, 2026.5.7, and 2026.8.2, an authentik SAML Source verifies an assertion's signature and validity period but does not ensure that the identity provider issued the assertion for that Source or in response to a login request from that Source. The SAML Source also does not record already accepted assertions, allowing replay. An unauthenticated actor who possesses such a valid assertion can use an assertion intended for another service provider or reuse an earlier assertion to authenticate as the user named by the assertion. Only SAML Sources are affected; SAML Providers and other Source types are not affected. This issue is fixed in versions 2026.2.7, 2026.5.7, and 2026.8.2.