CVE-2026-20779

High

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.

SeverityHigh

CVSS7.1

Exploit probability—

ProductCode.gitea.io/gitea

PublishedJul 3, 2026

First seenJul 3, 2026

Weakness typeCWE-294CWE-294

How to fix

Update

code.gitea.io/gitea1.26.3 or later

Patches

github.com/go-gitea/gitea/pull/38151

Vendor advisories

github.com/go-gitea/gitea/security/advisories/GHSA-gx3v-q759-g323
github.com/go-gitea/gitea/releases/tag/v1.26.3
blog.gitea.com/release-of-1.26.3-and-1.26.4/

Affected products

Product	Affected versions	Fixed in
code.gitea.io/giteaGo	1.5.0 ≤ v < 1.26.3	1.26.3

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