CVE-2026-20779

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 v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

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

Configurations

No configuration.

History

25 Oct 2026, 15:10

Type	Values Removed	Values Added
Summary		(es) Las versiones de Gitea desde la 1.5.0 anteriores a la 1.26.3 tienen un defecto de aplicación de uso único de TOTP que permite que un código TOTP válido sea aceptado más de una vez a través de los flujos de autenticación de dos factores web y la ruta X-Gitea-OTP de autenticación básica.

Information

Published : 2026-07-03 21:16

Updated : 2026-10-25 15:10

NVD link : CVE-2026-20779

Mitre link : CVE-2026-20779

CVE.ORG link : CVE-2026-20779

JSON object : View

Products Affected

No product.

CWE

CWE-294

Authentication Bypass by Capture-replay

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