CVE-2026-104626: Gitea

High severity, CVSS 8.8. EPSS: 0.3% chance of exploitation in the next 30 days.

A user who can open a fork pull request can place workflow content with a shared run-level concurrency group into a Gitea Actions run that is awaiting approval. When a later run in that group cancels the blocked job, the run becomes terminal while still marked as needing approval. If a maintainer later approves the run, Gitea passed the already-cancelled job back through concurrency preparation, set it to waiting, and made it claimable by a matching runner, executing fork-controlled workflow code. Exploitation requires the maintainer's later approval action, Actions to be enabled, and a runner that accepts the repository's jobs.

Affected products

• Gitea Gitea: up to and including 1.27.3

Published 2026-10-06. Last modified 2026-10-07.