{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-103670","assignerOrgId":"88ee5874-cf24-4952-aea0-31affedb7ff2","state":"PUBLISHED","assignerShortName":"Gitea","dateReserved":"2026-10-04T21:57:35.576Z","datePublished":"2026-10-06T19:23:40.050Z","dateUpdated":"2026-10-07T15:58:09.298Z"},"containers":{"cna":{"providerMetadata":{"orgId":"88ee5874-cf24-4952-aea0-31affedb7ff2","shortName":"Gitea","dateUpdated":"2026-10-06T19:23:40.050Z"},"title":"Gitea trusted workflow cancellation by unapproved fork runs","descriptions":[{"lang":"en","value":"When a Gitea Actions run was inserted, older runs in the same workflow-level concurrency group were cancelled without checking whether the new run still needed approval. Because fork pull request runs are inserted under the base repository, a user who can open a pull request from a fork could cancel trusted in-progress runs that share a concurrency group with `cancel-in-progress` enabled, without approval and without running any code. On self-hosted runners this can interrupt deployments and leave partial state behind."}],"affected":[{"vendor":"Gitea","product":"Gitea","packageName":"gitea.dev","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.27.3","versionType":"semver"}]}],"references":[{"url":"https://github.com/go-gitea/gitea/security/advisories/GHSA-4j4g-m7mr-hp5j","name":"GitHub Security Advisory GHSA-4j4g-m7mr-hp5j","tags":["vendor-advisory"]},{"url":"https://github.com/go-gitea/gitea/pull/39399","name":"Fix: go-gitea/gitea pull request #39399","tags":["patch"]},{"url":"https://blog.gitea.com/release-of-28.0.0/","name":"Gitea 28.0.0 release announcement","tags":["release-notes"]},{"url":"https://github.com/go-gitea/gitea/releases/tag/v28.0.0","name":"go-gitea/gitea v28.0.0 release","tags":["release-notes"]}],"credits":[{"lang":"en","value":"https://github.com/Pedromdsn","type":"reporter"},{"lang":"en","value":"https://github.com/bircni","type":"remediation developer"},{"lang":"en","value":"https://github.com/silverwind","type":"remediation developer"}]},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-667","lang":"en","description":"CWE-667 Improper Locking"}]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-10-07T15:55:33.888984Z","id":"CVE-2026-103670","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-07T15:58:09.298Z"}}]}}