PT-2026-45854 · Goauthentik · Authentik

Published 2026-06-02 · Updated 2026-06-02 · CVE-2026-41569

NVD

CVSS v4.0

6.9

Medium

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

Fix

Open Redirect

Weakness Enumeration

CWE-601

Related Identifiers

CVE-2026-41569

Affected Products

Authentik

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-41569 · Security Note
• https://github.com/goauthentik/authentik/security/advisories/GHSA-995q-72cw-cfw3 · Note