CVE-2026-58426: Gitea Open Source Git Server

Critical severity, CVSS 9.6. EPSS: 0.3% chance of exploitation in the next 30 days.

Gitea Actions Artifacts V4 signed URL HMAC ambiguity allows cross-repository artifact read and cross-task upload-state write

Affected products

• Gitea Gitea Open Source Git Server: from 1.22.0, up to and including 1.26.1

Published 2026-07-03. Last modified 2026-07-06.