CVE-2025-64340
FastMCP has a Command Injection vulnerability - Gemini CLI
Vexday Risk Score
13Bajo
Decisión SSVC (CISA)
Track
Sin señal de explotación → monitorear
CVSS 6.7EPSS 0.7%KEV nãoPoC —Nuclei —Metasploit —Patch —
Ciclo de vida
03 abr 2026Publicada en NVD
Recomendación: Monitorear — sin señal de explotación por ahora.
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.
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Productos afectados
jlowin · fastmcp¿Quieres saber si tu infraestructura está expuesta a esto?
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