{"id":"CVE-2026-20888","aliases":["BIT-gitea-2026-20888","GHSA-9cgq-wp42-4rpq","GHSA-ccq9-c5hv-cf64","GO-2026-4366"],"url":"https://o3.security/vulnerability/CVE-2026-20888","summary":"Gitea Pull Requests Auto-Merge: Read-Only Users Can Cancel Scheduled Auto-Merge via Web Endpoint (Authorization Bypass)","details":"Gitea does not properly verify authorization when canceling scheduled auto-merges via the web interface. A user with read access to pull requests may be able to cancel auto-merges scheduled by other users.","published":"2026-01-22T22:01:51.214Z","modified":"2026-08-12T03:51:08.548574735Z","cvss":{"score":4.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"},"epss":{"score":0.00309,"percentile":0.22946,"asOf":"2026-08-24"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/go-gitea/gitea","fixedVersion":"1.25.4"}],"fix":{"url":"https://github.com/go-gitea/gitea/pull/36341","label":"go-gitea/gitea#36341"},"references":[{"type":"ADVISORY","url":"https://blog.gitea.com/release-of-1.25.4/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/20xxx/CVE-2026-20888.json"},{"type":"ADVISORY","url":"https://github.com/go-gitea/gitea/releases/tag/v1.25.4"},{"type":"ADVISORY","url":"https://github.com/go-gitea/gitea/security/advisories/GHSA-ccq9-c5hv-cf64"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-20888"},{"type":"FIX","url":"https://github.com/go-gitea/gitea/pull/36341"},{"type":"FIX","url":"https://github.com/go-gitea/gitea/pull/36356"},{"type":"WEB","url":"https://blog.gitea.com/release-of-1.25.4"},{"type":"PACKAGE","url":"https://github.com/go-gitea/gitea"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:08.548574735Z"}}