All vulnerabilities
CVE-2026-96580GHSA-p3rv-cr5f-9gjh

Gitea Actions memory exhaustion through large static matrices

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)0.35%Chance of exploitation activity in the next 30 days, higher than 27% 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

Gitea expanded a workflow's static strategy.matrix into its full Cartesian product without a size limit when creating a run, before the fork pull request approval gate applied. A user who can open a pull request from a fork could submit a small workflow file whose matrix expands to a very large number of jobs, consuming server memory and potentially terminating the Gitea process. No runner is required. Static matrices above 256 combinations are now rejected before expansion.

Text from CVE List

Affected versions 2

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

References 4