CVE Catalog

CVE-2026-79538

CriticalCVSS 9.8
Published: Updated: Translated: NVD NIST

Summary

metatool-ai MetaMCP up to and including 2.4.22 is vulnerable to Code Execution in the internal MCP inspector proxy endpoint GET /mcp-proxy/server/stdio (createTransport, STDIO branch, routers/mcp-proxy/server.ts).

Risk Assessment

An attacker could exploit this vulnerability to execute arbitrary code on the server, potentially leading to full system compromise.

Recommendation

Update MetaMCP to the latest version and restrict access to the proxy endpoint to trusted users only.

Related vulnerabilities

Original NVD description (English source)

metatool-ai MetaMCP up to and including 2.4.22 is vulnerable to Code Execution in the internal MCP inspector proxy endpoint GET /mcp-proxy/server/stdio (createTransport, STDIO branch, routers/mcp-proxy/server.ts).

Vulnerability data from NVD (NIST) · CISA KEV · EPSS