CVE-2026-49448: Goauthentik Authentik

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

authentik is an open-source identity provider. Prior to versions 2025.12.6, 2026.2.4, and 2026.5.1, the Source stage can be bypassed by sending an empty POST. This issue has been patched in versions 2025.12.6, 2026.2.4, and 2026.5.1.

Affected products

• Goauthentik Authentik: before 2025.12.6 (fixed in 2025.12.6); from 2026.2.0, before 2026.2.4 (fixed in 2026.2.4); from 2026.5.0, before 2026.5.1 (fixed in 2026.5.1)

Published 2026-06-02. Last modified 2026-07-22.