CVE-2026-79538

CVSS 9.8 (critical) · published 2026-09-29

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).

Weakness: CWE-94

Source: NVD CVE-2026-79538

References

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

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