CVE-2025-64340

MEDIUM

6.7

Beschreibung

FastMCP is the standard framework for building MCP applications. Prior to version 3.2.0, server names containing shell metacharacters (e.g., &) can cause command injection on Windows when passed to fastmcp install claude-code or fastmcp install gemini-cli. These install paths use subprocess.run() with a list argument, but on Windows the target CLIs often resolve to .cmd wrappers that are executed through cmd.exe, which interprets metacharacters in the flattened command string. This issue has been patched in version 3.2.0.

CVE Details

CVSS v3.1 Bewertung6.7

SchweregradMEDIUM

CVSS VektorCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

AngriffsvektorLOCAL

KomplexitatHIGH

Erforderliche PrivilegienLOW

BenutzerinteraktionREQUIRED

Veroffentlicht4/3/2026

Zuletzt geandert4/3/2026

Quellenvd

Honeypot-Sichtungen0

Schwachen (CWE)

CWE-78

Referenzen

https://github.com/PrefectHQ/fastmcp/pull/3522(security-advisories@github.com)

https://github.com/PrefectHQ/fastmcp/security/advisories/GHSA-m8x7-r2rg-vh5g(security-advisories@github.com)

https://github.com/PrefectHQ/fastmcp/security/advisories/GHSA-m8x7-r2rg-vh5g(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Korrelationen

Keine Korrelationen erfasst

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