CVE-2026-27780: Gitea Open Source Git Server

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

Gitea versions before 1.26.0 do not fail closed on bufio.Scanner errors while processing pre-receive hook input, allowing oversized input to bypass branch-protection checks.

Affected products

• Gitea Gitea Open Source Git Server: before 1.26.0 (fixed in 1.26.0)

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