CVE-2025-64340
FastMCP has a Command Injection vulnerability - Gemini CLI
Vexday Risk Score
13Baixo
Decisão SSVC (CISA)
Track
Sem sinal de exploração → monitorar
CVSS 6.7EPSS 0.7%KEV nãoPoC —Nuclei —Metasploit —Patch —
Ciclo de vida
03 abr 2026Publicada no NVD
Recomendação: Monitorar — sem sinal de exploração no momento.
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
Produtos afetados
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