CVE-2026-79538
Critical
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).
SeverityCritical
CVSS9.8
Exploit probability—
ProductMetaMCP
PublishedSep 29, 2026
First seenSep 29, 2026
Weakness typeCWE-94Code injection
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| metatool-ai MetaMCP | v ≤ 2.4.22 | — |
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