{"id":"CVE-2026-66877","revision":"7fd7cc2b07944dd8b52a4c084c2394e4","records":[{"revision":"7fd7cc2b07944dd8b52a4c084c2394e4","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-66877","aliases":[],"title":"Gitea fork workflow approval bypass through concurrency cancellation","description":"Gitea enforces first-time fork contributor approval by blocking jobs, but some job transition and dispatch paths do not re-check the run's approval requirement. A separate run sharing a job-level concurrency group can cancel a pending job and cause its blocked sibling jobs to be re-emitted and dispatched without approval. This allows unreviewed workflow code to execute on self-hosted runners; fork secrets remain withheld and the run token remains read-only.","state":0,"publishedAt":"2026-10-14T14:36:11.356+00:00","modifiedAt":"2026-10-15T03:56:53.515+00:00","affected":[{"ecosystem":"Vendor product","name":"code.gitea.io/gitea","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Gitea\",\n                    \"product\": \"Gitea\",\n                    \"packageName\": \"code.gitea.io/gitea\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"lessThanOrEqual\": \"1.27.2\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://github.com/go-gitea/gitea/security/advisories/GHSA-v2w8-m4gr-qj65","https://blog.gitea.com/release-of-1.27.3/","https://github.com/go-gitea/gitea/pull/39005","https://github.com/go-gitea/gitea/pull/39018","https://github.com/go-gitea/gitea/releases/tag/v1.27.3"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-66877","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-66877","identifiers":["CVE-2026-66877"]},"retained":false,"historicalAffected":[]}],"coverage":[]}