{"id":"CVE-2026-27780","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-27780","summary":"Gitea pre-receive hook can miss branch-protection checks after scanner errors","details":"Gitea versions before 1.26.0 do not fail closed on bufio.Scanner errors while processing pre-receive hook input, allowing oversized input to bypass branch-protection checks.","published":"2026-07-03T20:19:37.968Z","modified":"2026-08-12T03:51:26.512507681Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[],"fix":{"url":"https://github.com/go-gitea/gitea/pull/36963","label":"go-gitea/gitea#36963"},"references":[{"type":"ADVISORY","url":"https://blog.gitea.com/release-of-1.26.0/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27780.json"},{"type":"ADVISORY","url":"https://github.com/go-gitea/gitea/releases/tag/v1.26.0"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27780"},{"type":"FIX","url":"https://github.com/go-gitea/gitea/pull/36963"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:26.512507681Z"}}