CVE-2026-49448

authentik: SourceStage bypass via empty POST

State: Published
Severity: 9.8 Critical
Published: Jun 2, 2026
Updated: Jun 3, 2026
Reserved: May 30, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	GitHub_M

Weaknesses

CWE-287 Improper Authentication

Affected Products

Product	Versions
authentikgoauthentik	< 2025.12.6Affected < 2026.2.4Affected < 2026.5.1Affected

References

https://github.com/goauthentik/authentik/security/advisories/GHSA-xp7f-xjjx-gwm8

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