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CVE PROGRAM SOURCE RECORD9.1 Critical

CVE-2026-26247

Gitea OAuth2 PKCE S256 challenges are not enforced during token exchange

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Status
Published
Published
Updated
Assigning organization
Gitea

Description

Gitea versions before 1.25.5 do not persist the OAuth2 PKCE S256 challenge method correctly during authorization, allowing token exchange without the expected verifier check.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Gitea Gitea Open Source Git Server

Default version status: unaffected

  • 0 to < 1.25.5affected

References