CVE-2026-14541
Gravedad CVSS v4.0:
ALTA
Tipo:
CWE-287
Autenticación incorrecta
Fecha de publicación:
31/07/2026
Última modificación:
31/07/2026
Descripción
*** Pendiente de traducción *** An authentication bypass and audience confusion vulnerability exists in the Google OAuth provider component of Google mcp-toolbox version 1.4.0. When a Google authService is initialized with mcpEnabled: true but lacks an explicitly defined audience or clientId, the ValidateMCPAuth pipeline for opaque tokens skips audience validation entirely. As a result, the toolbox will accept any valid Google OAuth access token—even those minted for unrelated ecosystem applications—granting unauthorized clients access to protected tools and data backends.