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@frontmcp/sdk vulnerabilities

Vulnerabilities published for @frontmcp/sdk in the last 30 days: 0. Listed in the KEV catalogue: 0.

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Vulnerability: 1

  1. CVE-2026-39885

    High · CVSS 7.5EPSS 0.4%Fix available

    FrontMCP Affected by SSRF via $ref Dereferencing in Untrusted OpenAPI Specifications

    FrontMCP is a TypeScript-first framework for the Model Context Protocol (MCP). Prior to 2.3.0, the mcp-from-openapi library uses @apidevtools/json-schema-ref-parser to dereference $ref pointers in OpenAPI specifications without configuring any URL restrictions or custom resolvers. A malicious OpenAPI specification containing $ref values pointing to internal network addresses, cloud metadata endpoints, or local files will cause the library to fetch those resources during the initialize() call. This enables Server-Side Request Forgery (SSRF) and local file read attacks when processing untrusted OpenAPI specifications. This vulnerability is fixe

    @frontmcp/sdkNode.js
    • Update to 1.0.4
    Published Updated
    Source advisory 1 ↗Source advisory 2 ↗Source advisory 3 ↗

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