PT-2026-55597 · Gitea · Gitea
CVSS v3.1
9.1
Critical
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
Name of the Vulnerable Software and Affected Versions
Gitea versions prior to 1.25.5
Description
The software fails to correctly persist the OAuth2 PKCE S256 challenge method during the authorization process. This flaw allows for token exchange without the required verifier check. PKCE (Proof Key for Code Exchange) is a security extension for OAuth2 designed to prevent authorization code injection attacks.
Recommendations
Update Gitea to version 1.25.5 or later.
Exploit
Fix
Improper Access Control
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Weakness Enumeration
Related Identifiers
Affected Products
Gitea