CVE-2026-104626
Description
AI Translation Available
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.
841
Improper Enforcement of Behavioral Workflow
IncompleteCommon Consequences
Security Scopes Affected:
Other
Potential Impacts:
Alter Execution Logic
Applicable Platforms
All platforms may be affected
https://blog.gitea.com/release-of-28.0.0/
https://github.com/go-gitea/gitea/pull/39399
https://github.com/go-gitea/gitea/releases/tag/v28.0.0
https://github.com/go-gitea/gitea/security/advisories/GHSA-93pj-3x56-5gc2