CVEvulnerability
CVE-2026-104626
8.8 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-10-06
- Last modified
- 2026-10-13
- Assigner
- 88ee5874-cf24-4952-aea0-31affedb7ff2
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-841
Description
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 configurations
• gitea gitea (< 28.0.0)
Related
Weakness · CWE (1)
- CWE-841 Improper Enforcement of Behavioral Workflow weakness
References
- https://blog.gitea.com/release-of-28.0.0/ Release Notes
- https://github.com/go-gitea/gitea/pull/39399 Patch
- https://github.com/go-gitea/gitea/releases/tag/v28.0.0 Release Notes
- https://github.com/go-gitea/gitea/security/advisories/GHSA-93pj-3x56-5gc2 Mitigation, Vendor Advisory