{"id":"CVE-2026-20779","aliases":["GHSA-gx3v-q759-g323","GO-2026-6057"],"url":"https://o3.security/vulnerability/CVE-2026-20779","summary":"Gitea TOTP single-use enforcement defect allows OTP replay","details":"Gitea versions from 1.5.0 before 1.26.3 have a TOTP single-use enforcement defect that allows a valid TOTP code to be accepted more than once across web two-factor authentication flows and the Basic Auth X-Gitea-OTP path.","published":"2026-07-03T20:19:29.239Z","modified":"2026-08-12T03:51:25.355798097Z","cvss":{"score":7.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N"},"epss":null,"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/2026/20xxx/CVE-2026-20779.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-gx3v-q759-g323"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-20779"},{"type":"FIX","url":"https://github.com/go-gitea/gitea/pull/38151"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:25.355798097Z"}}