All vulnerabilities
CVE-2026-103670GHSA-4j4g-m7mr-hp5j

Gitea trusted workflow cancellation by unapproved fork runs

Gitea Gitea
Open in ThreatlineRecord JSON
CVSS
7.5High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.21%Chance of exploitation activity in the next 30 days, higher than 11% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in28.0.0Fixed versionGitHub
Published6 Oct 2026Updated 7 Oct 2026CVE List

What fixes it

  • 28.0.0gitea.dev, goGitHubgo get gitea.dev@v28.0.0

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

When a Gitea Actions run was inserted, older runs in the same workflow-level concurrency group were cancelled without checking whether the new run still needed approval. Because fork pull request runs are inserted under the base repository, a user who can open a pull request from a fork could cancel trusted in-progress runs that share a concurrency group with cancel-in-progress enabled, without approval and without running any code. On self-hosted runners this can interrupt deployments and leave partial state behind.

Text from CVE List

Affected versions 2

  • Giteaaffected: all versions through 1.27.3CVE List
  • gitea.dev, go<= 1.27.3GitHub

References 4