Vulnerability · Published Oct 6, 2026 · Assigned by Gitea
CVE-2026-104632Gitea fork workflow approval bypass through cancel and rerun
High 8.8
In plain English
A high-severity security flaw in Gitea from Gitea. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities).
Official description
Gitea Actions blocks the jobs of workflow runs from first-time fork pull request contributors until a maintainer approves the run. The rerun path only required a run to be finished and built the new attempt's jobs without considering the pending approval, so when a user with Actions write access cancelled a run that was awaiting approval and then re-ran it, the new jobs were created as waiting rather than blocked while the run still recorded that approval was required. Cancelling and re-running stale fork checks is a routine action that does not involve the approval control, so where Actions is enabled and a matching runner is registered, workflow code taken from the fork pull request head could run on the repository's runners without an explicit approval.
Affected products (as reported)
Weakness: CWE-285 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- GitHub Security Advisory GHSA-pvjf-7jrm-6w9g vendor-advisory
- Fix: go-gitea/gitea pull request #39399 patch
- Gitea 28.0.0 release announcement release-notes
- go-gitea/gitea v28.0.0 release release-notes