CVE-2026-14541

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...

CVE-2026-14541

The CVE concerns Google mcp-toolbox version 1.4.0 in its Google OAuth provider component. If an authService is initialized with mcpEnabled: true but without an explicit audience or clientId, the ValidateMCPAuth pipeline for opaque tokens omits audience validation. This causes the toolbox to accep...

GHSA-VGJ4-345G-JCF8 Cloudreve: OAuth access tokens bypass scope enforcement due to missing client_id claim

Summary Cloudreve's OAuth access tokens can bypass OAuth scope enforcement. This does not appear to be the intended design. The documentation describes OAuth client permissions/scopes, the API has an insufficient-scope error code, and the code comments say RequiredScopes... should verify scopes...

CVE-2026-54560 Cloudreve: OAuth access tokens bypass scope enforcement due to missing client_id claim

Cloudreve is a self-hosted file management and sharing system. From 4.12.0 until 4.16.1, Cloudreve's OAuth access tokens are issued without the OAuth clientid claim, so the JWT verifier does not load token scopes into request context and RequiredScopes treats the request like non-scoped session...