---
id: CVE-2026-20779
title: >-
  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.
summary: >-
  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.
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N'
cwe:
  - CWE-294
published: '2026-07-03'
updated: '2026-07-03'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-20779'
references:
  - url: 'https://blog.gitea.com/release-of-1.26.3-and-1.26.4/'
    label: 88ee5874-cf24-4952-aea0-31affedb7ff2
  - url: 'https://github.com/go-gitea/gitea/pull/38151'
    label: 88ee5874-cf24-4952-aea0-31affedb7ff2
  - url: 'https://github.com/go-gitea/gitea/releases/tag/v1.26.3'
    label: 88ee5874-cf24-4952-aea0-31affedb7ff2
  - url: 'https://github.com/go-gitea/gitea/security/advisories/GHSA-gx3v-q759-g323'
    label: 88ee5874-cf24-4952-aea0-31affedb7ff2
tags:
  - nvd
epss: 0.00481
epssPercentile: 0.40639
ingestedAt: '2026-07-04T13:56:12.038Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.