CVE-2025-62425

MAS (Matrix Authentication Service) is a user management and authentication service for Matrix homeservers, written and maintained by Element. A logic flaw in matrix-authentication-service 0.20.0 through 1.4.0 allows an attacker with access to an authenticated MAS session to perform sensitive operations without entering the current password. These include changing the current password, adding or removing an e-mail address and deactivating the account. The vulnerability only affects instances which have the local password database feature enabled (passwords section in the config). Patched in matrix-authentication-service 1.4.1.

CVSS v3 8.3 HIGH

8.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/element-hq/matrix-authentication-service/commit/bce99edb6177be11f8f38c1d01f5606ce7b4b2e5
https://github.com/element-hq/matrix-authentication-service/security/advisories/GHSA-6wfp-jq3r-j9xh

Configurations

No configuration.

History

09 Oct 2026, 10:10

Type	Values Removed	Values Added
Summary		(es) MAS (Matrix Authentication Service) es un servicio de gestión de usuarios y autenticación para homeservers de Matrix, escrito y mantenido por Element. Un fallo lógico en matrix-authentication-service 0.20.0 hasta 1.4.0 permite a un atacante con acceso a una sesión MAS autenticada realizar operaciones sensibles sin introducir la contraseña actual. Estas incluyen cambiar la contraseña actual, añadir o eliminar una dirección de correo electrónico y desactivar la cuenta. La vulnerabilidad solo afecta a las instancias que tienen la función de base de datos de contraseñas local habilitada (sección de contraseñas en la configuración). Parcheado en matrix-authentication-service 1.4.1.

Information

Published : 2025-10-16 19:15

Updated : 2026-10-09 10:10

NVD link : CVE-2025-62425

Mitre link : CVE-2025-62425

CVE.ORG link : CVE-2025-62425

JSON object : View

Products Affected

No product.

CWE

CWE-620

Unverified Password Change

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