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OpenAdvisories
Critical · 9.8 CVE-2026-49448 EUVD-2026-34030

authentik: SourceStage bypass via empty POST

Published Jun 2, 2026 · Updated Jun 3, 2026 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
goauthentik authentik < 2025.12.6, < 2026.2.4, < 2026.5.1 —

References