CVE-2026-96580

Summary

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.

Affected Software

Weaknesses

• CWE-400: CWE-400: Uncontrolled Resource Consumption

References

• https://github.com/go-gitea/gitea/security/advisories/GHSA-p3rv-cr5f-9gjh
• https://github.com/go-gitea/gitea/pull/39295
• https://blog.gitea.com/release-of-28.0.0/
• https://github.com/go-gitea/gitea/releases/tag/v28.0.0

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