CVE-2026-79538

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).

• Published Sep 29, 2026
• CVSS 9.8 critical
• 0.4% chance of exploitation in the next 30 days (EPSS)

CVE-2026-79538 at the National Vulnerability Database