{"id":"CVE-2026-27775","aliases":["GHSA-649p-mmhf-85c7","GO-2026-6043"],"url":"https://o3.security/vulnerability/CVE-2026-27775","summary":"Gitea pre-receive hook permission cache allows full repository write access","details":"Gitea 1.25.5 caches a branch-specific write-permission result across multiple refs in one pre-receive hook session, allowing a per-branch maintainer-edit grant to be reused for other refs and escalate to full repository write access.","published":"2026-07-03T20:19:37.275Z","modified":"2026-08-12T03:51:31.055648489Z","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.00567,"percentile":0.44139,"asOf":"2026-08-13"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"code.gitea.io/gitea","fixedVersion":"1.26.3"}],"fix":{"url":"https://github.com/go-gitea/gitea/pull/38151","label":"go-gitea/gitea#38151"},"references":[{"type":"ADVISORY","url":"https://blog.gitea.com/release-of-1.26.3-and-1.26.4/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27775.json"},{"type":"ADVISORY","url":"https://github.com/go-gitea/gitea/releases/tag/v1.26.3"},{"type":"ADVISORY","url":"https://github.com/go-gitea/gitea/security/advisories/GHSA-649p-mmhf-85c7"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27775"},{"type":"FIX","url":"https://github.com/go-gitea/gitea/pull/38151"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:31.055648489Z"}}