Gitea fork workflow job revival through later approval

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-104626
StatePUBLISHED
AssignerGitea
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-06 20:17:15 UTC
Updated2026-10-06 20:17:15 UTC
DescriptionA 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.

Risk And Classification

Problem Types: CWE-841 | CWE-841 CWE-841: Improper Enforcement of Behavioral Workflow

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Gitea Gitea affected 1.27.3 semver Not specified

References

ReferenceSourceLinkTags
github.com/go-gitea/gitea/releases/tag/v28.0.0 88ee5874-cf24-4952-aea0-31affedb7ff2 github.com
blog.gitea.com/release-of-28.0.0 88ee5874-cf24-4952-aea0-31affedb7ff2 blog.gitea.com
github.com/go-gitea/gitea/pull/39399 88ee5874-cf24-4952-aea0-31affedb7ff2 github.com
github.com/go-gitea/gitea/security/advisories/GHSA-93pj-3x56-5gc2 88ee5874-cf24-4952-aea0-31affedb7ff2 github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: https://github.com/opensec-intelligence (en)

CNA: https://github.com/mayank-jangid-moon (en)

CNA: https://github.com/Kushalkhemka (en)

CNA: https://github.com/skigeek16 (en)

CNA: https://github.com/nithissh7 (en)

CNA: https://github.com/kewmine (en)

CNA: https://github.com/bircni (en)

CNA: https://github.com/silverwind (en)

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