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CVE PROGRAM SOURCE RECORD8.1 High

CVE-2026-14537

Authorization Bypass in MCP Toolbox Legacy HTTP Endpoints

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Status
Published
Published
Updated
Assigning organization
Google

Description

Incorrect Authorization in the direct HTTP API tool invocation endpoint in Google mcp-toolbox versions v1.3.0 and v1.4.0 allows an unauthenticated attacker to invoke tools protected by the scopeRequired feature via sending tool invocation requests through legacy HTTP endpoints when the --enable-api flag is active.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Google mcp-toolbox

Default version status: unaffected

  • 1.3.0affected
  • v1.4.0affected

References