Gitea Actions fork workflow trust through pull request review commit

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-118386
StatePUBLISHED
AssignerGitea
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-01 10:18:36 UTC
Updated2026-11-01 10:18:36 UTC
DescriptionWorkflows triggered by a pull request review were read from the commit named in the review's `commit_id`, while the fork restrictions were decided by the reviewed pull request, and the commit was not checked to belong to that pull request. A user with read access to a repository could place a commit of their own in it, through a fork pull request or an AGit push, and submit a review naming that commit on a pull request whose head branch is in the same repository. On instances with a runner serving the repository, the attacker's workflow then ran without approval, received the Actions secrets of the repository and its owner, and got a `GITEA_TOKEN` with write access to the repository. Review-triggered workflows now run on the pull request head.

Risk And Classification

EPSS: 0.001490000 probability, percentile 0.040230000 (date 2026-11-02)

Problem Types: CWE-863 | CWE-863 CWE-863: Incorrect Authorization

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Gitea Gitea affected 1.19.0 28.3.0 semver Not specified

References

ReferenceSourceLinkTags
blog.gitea.com/release-of-28.3.0 88ee5874-cf24-4952-aea0-31affedb7ff2 blog.gitea.com
github.com/go-gitea/gitea/pull/40117 88ee5874-cf24-4952-aea0-31affedb7ff2 github.com
github.com/go-gitea/gitea/releases/tag/v28.3.0 88ee5874-cf24-4952-aea0-31affedb7ff2 github.com
github.com/go-gitea/gitea/pull/40099 88ee5874-cf24-4952-aea0-31affedb7ff2 github.com
github.com/go-gitea/gitea/security/advisories/GHSA-32h8-5xqg-h466 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/silverwind (en)

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

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

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