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CVE-2026-79538.

Source-reported disclosure and enrichment record.

SEVERITY / CVSSCRITICAL / 9.8CVSS 3.1 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EXPLOITATION STATUSNot listed in the cached KEV catalogThis does not establish absence of exploitation.
RECORD STATUSDeferredModified Sep 29, 2026

Disclosure summary

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).

Source-reported weakness categories

CWE-94

Source-specific records & product guidance

Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.

NIST National Vulnerability Database · NVD-CVE-2026-79538

Open original source · Updated Sep 29, 2026

Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.

Original records & references

PUBLISHED 2026-09-29T16:17:27-04:00
MODIFIED 2026-09-29T17:28:02-04:00
INGESTED 2026-10-06T11:43:05-04:00