8.0
Élevée
CVE-2026-14541 An authentication bypass and audience confusion vulnerability exists in the Google OAuth provider component of Google…
Description
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.
Produits et versions touchés
| Produit | Versions touchées | Corrigé en |
|---|---|---|
| mcp-toolbox | 1.4.0 | Pas de correctif indiqué |
Références
- github.com github.com
Chronologie
- Publiée
- Dernière modification
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