{"id":"CVE-2026-103670","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-103670","generatedAt":"2026-10-28T01:53:03.324Z","title":"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.","description":"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.","published":"2026-10-06T20:17:15.000Z","lastModified":"2026-10-15T02:23:08.000Z","status":"Analyzed","sourceIdentifier":"88ee5874-cf24-4952-aea0-31affedb7ff2","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},"cwe":["CWE-667"],"affected":["gitea/gitea"],"epss":{"score":0.00215,"percentile":0.11853,"date":"2026-10-26","history":[{"date":"2026-10-07","score":0.00156,"percentile":0.04182}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.21%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"scored","label":"Newly scored","at":"2026-10-07T18:00:08.000Z","detail":{"from":null,"score":"7.5","severity":"HIGH","fromSeverity":null},"summary":"Now scored CVSS 7.5 HIGH."},{"kind":"new","label":"New CVE","at":"2026-10-06T20:17:15.000Z","detail":{"score":null,"severity":null,"publishedAt":"2026-10-06T20:17:14.717Z"},"summary":"New CVE, high severity (CVSS 7.5)."}],"references":[{"url":"https://blog.gitea.com/release-of-28.0.0/","tags":["Release Notes"],"source":"88ee5874-cf24-4952-aea0-31affedb7ff2"},{"url":"https://github.com/go-gitea/gitea/pull/39399","tags":["Patch"],"source":"88ee5874-cf24-4952-aea0-31affedb7ff2"},{"url":"https://github.com/go-gitea/gitea/releases/tag/v28.0.0","tags":["Release Notes"],"source":"88ee5874-cf24-4952-aea0-31affedb7ff2"},{"url":"https://github.com/go-gitea/gitea/security/advisories/GHSA-4j4g-m7mr-hp5j","tags":["Vendor Advisory"],"source":"88ee5874-cf24-4952-aea0-31affedb7ff2"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-103670","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}