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archive/Patch now/AIR-2025-0362
closedclosed 29 Oct 2025Patch now2 Disclosed vulnerabilityAI

CVE-2025-62801: FastMCP command injection in Cursor installer

FastMCP

A command injection vulnerability in FastMCP allows remote attackers to execute arbitrary OS commands on Windows hosts via unvalidated server names in the Cursor installer. A security advisory has been released.

disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why

CVSS
5.4
EPSS
<0.01 · top 87% · 2026-11-13
EPSS scores by FIRST
fix status
Fix status unknown
first report
29 Oct 2025
last update
29 Oct 2025
CVE ids
CVE-2025-62801other records

Timeline · 1

  1. 29 Oct 2025CVE-2025-62801: FastMCP vulnerable to windows command injection in FastMCP Cursor installer via server_name

Sources · 1

Advisories and databases

  1. 2025-10-29
    CVE-2025-62801: FastMCP vulnerable to windows command injection in FastMCP Cursor installer via server_name
    GitHub Advisory Database · github.com/advisories/GHSA-rj5c-58rq-j5g5

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Classification

lane
Patch now
AI role
Attack on AI
categories
Infrastructure vulnerability
severity
2 · Disclosed vulnerability
fix status
Fix status unknown
targets
Framework / tooling
owasp llm top 10
LLM03:2025 Supply Chain
mitre atlas
no technique for these categories
tags
command-injectionmcp
dates
happened 29 Oct 2025 · first reported 29 Oct 2025
origin
GitHub Advisory Database
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
record
confidence 0.95 · created 2026-10-18 07:00Z · updated 2026-10-18 07:00Z

Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned

Copy a brief

This record as a short Markdown brief, for a ticket, a chat or a coding agent.

the brief as text
# CVE-2025-62801: FastMCP command injection in Cursor installer

https://gcdradar.vercel.app/incidents/cve-2025-62801-fastmcp-command-injection-in-cursor-installer · AIR-2025-0362 · closed 2025-10-29

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2025-10-29
- AI role: Attack on AI
- Products: FastMCP
- CVE ids: CVE-2025-62801
- CVSS: 5.4

## Summary

A command injection vulnerability in FastMCP allows remote attackers to execute arbitrary OS commands on Windows hosts via unvalidated server names in the Cursor installer. A security advisory has been released.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2025-10-29: CVE-2025-62801: FastMCP vulnerable to windows command injection in FastMCP Cursor installer via server_name (https://github.com/advisories/GHSA-rj5c-58rq-j5g5)

## Sources

- 2025-10-29 GitHub Advisory Database: CVE-2025-62801: FastMCP vulnerable to windows command injection in FastMCP Cursor installer via server_name https://github.com/advisories/GHSA-rj5c-58rq-j5g5

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.

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