CVE-2025-64340

Katalog CVE

CVSS 7.8 · High EPSS 0,74%

Kerentanan Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') pada jlowin fastmcp. Skor CVSS 3.1 7.8 (High) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

3 April 2026

Terakhir diubah

24 Juli 2026

Status NVD

Analyzed

CVSS 3.1

7.8 (High), sumber NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

EPSS (30 hari)

0,74% peluang dieksploitasi; lebih tinggi dari 53,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/PrefectHQ/fastmcp/security/advisories/GHSA-m8x7-r2rg-vh5g exploit · patch · advisory vendor
• https://github.com/PrefectHQ/fastmcp/pull/3522 issue tracking · patch