PT-2026-45854 · Authentik · Authentik

Ayushparkara + 1 · CVE-2026-41569 · Published 2026-06-02 · Updated 2026-06-05

Positive Technologies (AI Summary)

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

Name of the Vulnerable Software and Affected Versions authentik versions prior to 2026.2.3

Description The WS-Federation provider in this open-source identity provider validates the user-supplied wreply parameter using a raw string prefix check instead of proper URL parsing. An attacker can craft a login link with a wreply value from a different origin that bypasses this check, leading the victim's browser to POST the signed WS-Federation login response to infrastructure controlled by the attacker.

Recommendations Update to version 2026.2.3.

Exploit

Fix

Open Redirect

Weakness Enumeration

CWE-601

Related Identifiers

BIT-AUTHENTIK-2026-41569

CVE-2026-41569

GHSA-995Q-72CW-CFW3

Affected Products

Authentik

References · 8

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41569.json · Exploit
• https://github.com/goauthentik/authentik/security/advisories/GHSA-995q-72cw-cfw3 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-41569 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-authentik-2026-41569 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-41569 · Security Note
• https://twitter.com/CVEnew/status/2061993234620899673 · Twitter Post
• https://t.me/cveNotify/166074 · Telegram Post
• https://twitter.com/infoflowcloud/status/2061994185750618624 · Twitter Post