{"id":"CVE-2026-27779","aliases":["GHSA-v8f2-2ghq-9whv"],"url":"https://o3.security/vulnerability/CVE-2026-27779","summary":"Gitea forwarded-proto handling allows public URL spoofing","details":"Gitea versions before 1.25.5 accept malformed or injected forwarded-proto values when detecting public URLs, allowing spoofed canonical URL generation.","published":"2026-07-03T20:19:37.622Z","modified":"2026-09-01T17:40:48.178231001Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"code.gitea.io/gitea","fixedVersion":"1.25.5"}],"fix":{"url":"https://github.com/go-gitea/gitea/pull/36810","label":"go-gitea/gitea#36810"},"references":[{"type":"ADVISORY","url":"https://blog.gitea.com/release-of-1.25.5/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27779.json"},{"type":"ADVISORY","url":"https://github.com/go-gitea/gitea/releases/tag/v1.25.5"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27779"},{"type":"FIX","url":"https://github.com/go-gitea/gitea/pull/36810"},{"type":"FIX","url":"https://github.com/go-gitea/gitea/pull/36836"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-01T17:40:48.178231001Z"}}