CVE-2026-79538

CRITICAL CVSS 9.8 View on NVD ↗

Description

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).

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

https://github.com/metatool-ai/metamcp
https://www.traceforce.ai/security-advisories/cve-2026-79538

Published: Sep 29, 2026 20:17 UTC Modified: Sep 29, 2026 21:28 UTC