PT-2025-44218 · Fastmcp · Fastmcp

Published 2025-10-28 · Updated 2026-04-14 · CVE-2025-62801

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions FastMCP versions prior to 2.13.0

Description FastMCP, a framework for building MCP applications, contains a command-injection issue. An attacker who can control the server name field of an MCP can execute arbitrary OS commands on Windows hosts running fastmcp install cursor.

Recommendations Update to version 2.13.0 or later.

Exploit

Fix

OS Command Injection

Weakness Enumeration

CWE-78

Related Identifiers

CVE-2025-62801

GHSA-RJ5C-58RQ-J5G5

Affected Products

Fastmcp

References · 13

• 🔥 https://github.com/jlowin/fastmcp/security/advisories/GHSA-rj5c-58rq-j5g5 · Exploit
• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/62xxx/CVE-2025-62801.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-62801 · Security Note
• https://osv.dev/vulnerability/CVE-2025-62801 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-APP-PYPI-CVE-2025-62801 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-rj5c-58rq-j5g5 · Vendor Advisory
• https://github.com/jlowin/fastmcp · Note
• https://twitter.com/CVEnew/status/1983290302552285674 · Twitter Post
• https://t.me/cveNotify/140835 · Telegram Post
• https://t.me/CVEtracker/36007 · Telegram Post
• https://twitter.com/VulmonFeeds/status/1983361481295982732 · Twitter Post
• https://t.me/cveNotify/141541 · Telegram Post
• https://t.me/cveNotify/140763 · Telegram Post