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mcp-framework vulnerabilities

Vulnerabilities published for mcp-framework in the last 30 days: 0. Listed in the KEV catalogue: 0.

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Vulnerability: 1

  1. CVE-2026-39313

    High · CVSS 8.7EPSS 0.5%Fix available

    MCP-Framework: Unbounded memory allocation in readRequestBody allows denial of service via HTTP transport

    mcp-framework is a framework for building Model Context Protocol (MCP) servers. In versions 0.2.21 and below, the readRequestBody() function in the HTTP transport concatenates request body chunks into a string with no size limit. Although a maxMessageSize configuration value exists, it is never enforced in readRequestBody(). A remote unauthenticated attacker can crash any mcp-framework HTTP server by sending a single large POST request to /mcp, causing memory exhaustion and denial of service. This issue has been fixed in version 0.2.22.

    mcp-frameworkNode.js
    • Update to 0.2.22
    Published Updated
    Source advisory 1 ↗Source advisory 2 ↗Source advisory 3 ↗

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