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.
Published: 2026-10-06
Score: 8.8 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Wed, 07 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 06 Oct 2026 23:30:00 +0000

Type Values Removed Values Added
First Time appeared Gitea
Gitea gitea
Vendors & Products Gitea
Gitea gitea

Tue, 06 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
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.
Title Gitea fork workflow job revival through later approval
Weaknesses CWE-841
References

cve-icon MITRE

Status: PUBLISHED

Assigner: Gitea

Published:

Updated: 2026-10-07T20:19:46.339Z

Reserved: 2026-10-04T21:57:35.546Z

Link: CVE-2026-104626

cve-icon Vulnrichment

Updated: 2026-10-07T20:19:36.989Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-06T20:17:15.120

Modified: 2026-10-07T21:17:08.760

Link: CVE-2026-104626

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-06T23:15:06Z

Weaknesses
  • CWE-841

    Improper Enforcement of Behavioral Workflow