CVE-2025-64340

MEDIUM

6.7

Descricao

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.

Detalhes CVE

Pontuacao CVSS v3.16.7

SeveridadeMEDIUM

Vetor CVSSCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

Vetor de ataqueLOCAL

ComplexidadeHIGH

Privilegios necessariosLOW

Interacao do usuarioREQUIRED

Publicado4/3/2026

Ultima modificacao4/3/2026

Fontenvd

Avistamentos honeypot0

Fraquezas (CWE)

CWE-78

Referencias

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)

Correlacoes IOC

Sem correlacoes registradas

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