BaselineWatch
Desk

CVE-2026-26247

9.1 critical SSVC exploitation: none Deferred

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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 1

  1. First seenCVSS 9.1NVD modified 2026-10-25 15:10

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 4