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.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Gitea
  • Gitea Open Source Git Server

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References
Link Providers
https://blog.gitea.com/release-of-1.26.3-and-1.26.4/ cve-icon
https://github.com/go-gitea/gitea/pull/38151 cve-icon
https://github.com/go-gitea/gitea/releases/tag/v1.26.3 cve-icon
https://github.com/go-gitea/gitea/security/advisories/GHSA-gx3v-q759-g323 cve-icon
History

Mon, 06 Jul 2026 23:15:00 +0000

Type Values Removed Values Added
First Time appeared Gitea
Gitea gitea Open Source Git Server
Vendors & Products Gitea
Gitea gitea Open Source Git Server

Fri, 03 Jul 2026 20:45:00 +0000

Type Values Removed Values Added
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.
Title Gitea TOTP single-use enforcement defect allows OTP replay
Weaknesses CWE-294
References
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: Gitea

Published: 2026-07-03T20:19:29.239Z

Updated: 2026-07-03T20:19:29.239Z

Reserved: 2026-03-03T03:26:00.104Z

Link: CVE-2026-20779

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.