CVE-2026-79538
CRITICAL
CVSS 9.8
Published: 2026-09-29
Modified: 2026-09-29
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Threat Intelligence Pending
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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).
Quick Facts
| CVE ID | CVE-2026-79538 |
| CVSS Score | 9.8 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Published | 2026-09-29 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |