{"id":"CVE-2026-20800","aliases":["BIT-gitea-2026-20800","GHSA-2vgv-hgv4-22mh","GHSA-g54m-9f6g-wj7q","GO-2026-4362"],"url":"https://o3.security/vulnerability/CVE-2026-20800","summary":"Notification API Leaks Private Repository Issue Titles After Collaborator Permission Revocation","details":"Gitea's notification API does not re-validate repository access permissions when returning notification details. After a user's access to a private repository is revoked, they may still view issue and pull request titles through previously received notifications.","published":"2026-01-22T22:01:50.368Z","modified":"2026-08-12T03:51:24.758974698Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},"epss":{"score":0.00363,"percentile":0.29066,"asOf":"2026-08-07"},"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/36339","label":"go-gitea/gitea#36339"},"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-2026-20800.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-g54m-9f6g-wj7q"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-20800"},{"type":"FIX","url":"https://github.com/go-gitea/gitea/pull/36339"},{"type":"WEB","url":"https://github.com/go-gitea/gitea/commit/67e75f30a83d2523cedc37ad7b03bcba66947833"},{"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":"2026-08-12T03:51:24.758974698Z"}}