CVE-2026-20779highCWE-294

CVE-2026-20779: high-severity vulnerability in Gitea Open Source Git Server

Gitea TOTP single-use enforcement defect allows OTP replay

Published · Updated

Follow this CVE+ Monitor Gitea Open Source Git Server+ Monitor code.gitea.io/gitea

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.1epss 0.5%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
Affected products
Gitea · Gitea Open Source Git Server
Related CVEs — Gitea Open Source Git Server

In the same product, most dangerous first.

CVE-2024-6886CRITICALInproper Sanitation of field leading to stored XSSEPSS 33.0%CVE-2026-20896CRITICALGitea Docker image trusts spoofable reverse-proxy headers by defaultEPSS 2.8%CVE-2026-27771HIGHGitea Composer package source links use insufficient permission checksEPSS 1.4%CVE-2026-27775HIGHGitea pre-receive hook permission cache allows full repository write accessEPSS 0.9%CVE-2026-56654CRITICALPrivilege Escalation via Access Token Scope Escalation in APIEPSS 0.8%CVE-2026-26292CRITICALGitea LFS mirror synchronization bypasses migration HTTP transport restrictionsEPSS 0.7%