Security Advisory

CVE-2026-41569

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-06-02 20:30:21

Last updated 2026-06-03 14:29:52

Assigner GitHub_M

CVSS score not scored

State PUBLISHED

Description

authentik is an open-source identity provider. Prior to version 2026.2.3, the WS-Federation provider validates the user-supplied wreply parameter using a raw string prefix check rather than proper URL parsing. An attacker who can craft a login link can supply a wreply value on a different origin that passes the check (e.g. https://portal.example.com.evil.tld/), causing the victim's browser to POST the signed WS-Federation login response to attacker-controlled infrastructure. This issue has been patched in version 2026.2.3.

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