CVE-2026-66874

Gitea required Actions check bypass through skipped workflows

State: Published
Severity: 6.5 Medium
Published: Oct 14, 2026
Updated: Oct 14, 2026
Reserved: Aug 13, 2026

Description

For pull request events, Gitea reads workflow definitions from the pull request head and posts a synthetic skipped status when workflow branch or path filters exclude execution. A fork pull request author can supply a workflow matching a required status context but deliberately prevent it from running. Because skipped statuses count as success, branch protection or organization-required workflow checks can appear satisfied without the mandated workflow executing; no runner or maintainer approval is required for this path.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N	CISA-ADP

Weaknesses

CWE-284 Improper Access Control
CWE-345 Insufficient Verification of Data Authenticity
CWE-693 Protection Mechanism Failure
CWE-807 Reliance on Untrusted Inputs in a Security Decision

Affected Products

Product	Versions
GiteaGitea	1.27.2 and earlierAffected

References

GitHub Security Advisory GHSA-5xp7-r6cr-39ffvendor-advisory
Gitea 1.27.3 release announcementrelease-notes
Fix: go-gitea/gitea pull request #39005patch
Fix: go-gitea/gitea pull request #39018patch
go-gitea/gitea v1.27.3 releaserelease-notes

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