CVE-2026-49448 CRITICAL

CVE-2026-49448: authentik: SourceStage bypass via empty POST

Vendor Goauthentik
Product authentik
Weakness CWE-287 · Improper authentication
Published June 2, 2026
Last update June 3, 2026
View on NVD All CVEs

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

June 2, 2026 CVE published
June 3, 2026 Record updated