{"id":"CVE-2026-20736","aliases":["BIT-gitea-2026-20736","GHSA-hgr3-x44x-33hx","GHSA-jr6h-pwwp-c8g6","GO-2026-4367"],"url":"https://o3.security/vulnerability/CVE-2026-20736","summary":"Gitea Web Attachment Deletion: Cross-Repository Unauthorized Deletion via Missing Repo Ownership Check","details":"Gitea does not properly verify repository context when deleting attachments. A user who previously uploaded an attachment to a repository may be able to delete it after losing access to that repository by making the request through a different repository they can access.","published":"2026-01-22T22:01:49.678Z","modified":"2026-08-07T11:48:19.075800290Z","cvss":{"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"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"code.gitea.io/gitea","fixedVersion":"1.25.4"}],"fix":{"url":"https://github.com/go-gitea/gitea/pull/36320","label":"go-gitea/gitea#36320"},"references":[{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-20736.json"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-20736"},{"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-2026-20736.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-jr6h-pwwp-c8g6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-20736"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2432205"},{"type":"FIX","url":"https://github.com/go-gitea/gitea/pull/36320"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:48:19.075800290Z"}}