CVE-2026-41569

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.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/goauthentik/authentik/security/advisories/GHSA-995q-72cw-cfw3	Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:goauthentik:authentik:*:*:*:*:*:*:*:*

History

04 Jun 2026, 20:00

Type	Values Removed	Values Added
First Time		Goauthentik Goauthentik authentik
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 6.1
CPE		cpe:2.3:a:goauthentik:authentik::::::::
References	~~() https://github.com/goauthentik/authentik/security/advisories/GHSA-995q-72cw-cfw3 -~~	() https://github.com/goauthentik/authentik/security/advisories/GHSA-995q-72cw-cfw3 - Mitigation, Vendor Advisory

02 Jun 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-02 21:16

Updated : 2026-06-04 20:00

NVD link : CVE-2026-41569

Mitre link : CVE-2026-41569

CVE.ORG link : CVE-2026-41569

JSON object : View

Products Affected

goauthentik

authentik

CWE

CWE-601

URL Redirection to Untrusted Site ('Open Redirect')

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