Vulnerability advisory

CVE-2026-20779

Gitea TOTP single-use enforcement defect allows OTP replay

Published Jul 3, 2026Updated Oct 28, 2026OSV record ↗

Also known as GHSA-gx3v-q759-g323GO-2026-6057

Severity

CVSS 3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

Affected versions

Repository

Affected commits	Fixed by commit
GIT github.com/go-gitea/gitea ↗
280ebcbf7c761a212fb091634384847a38f25cb0 to before 4aa0d704f2c7d30351016b740bfc45247fd77efa	`4aa0d704f2c7d30351016b740bfc45247fd77efa`
Also listed as affected (40) `v1.26.2` `v1.26.1` `v1.26.0` `v1.26.0-rc0` `v1.27.0-dev` `v1.26.0-dev` `v1.25.0-dev` `v1.24.0-dev` `v1.22.0-rc1` `v1.23.0-dev` `v1.22.0-rc0` `v1.21.0-rc0` `v1.22.0-dev` `v1.20.0-rc0` `v1.21.0-dev` `v1.20.0-dev` `v1.19.0-rc0` `v1.18.0-rc0` `v1.19.0-dev` `v1.18.0-dev` `v1.17.0-dev` `v1.16.0-rc1` `v1.15.0-rc1` `v1.16.0-dev` `v1.15.0-dev` `v1.14.0-dev` `v1.13.0-dev` `v1.12.0-dev` `v1.10.5` `v1.11.0-rc1` `v1.10.0-rc1` `v1.11.0-dev` `v1.9.0-rc1` `v1.10.0-dev` `v1.9.0-dev` `v1.7.0-dev` `v1.6.0-rc1` `v1.6.0-dev` `v1.5.0-rc1` `v1.5.0-dev`

Description

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.

CVE-2026-20779

Affected versions

Repository

Description

References