Moderate severityNVD Advisory· Published Oct 28, 2025· Updated Oct 29, 2025
FastMCP vulnerable to windows command injection in FastMCP Cursor installer via server_name
CVE-2025-62801
Description
FastMCP is the standard framework for building MCP applications. Versions prior to 2.13.0, a command-injection vulnerability lets any attacker who can influence the server_name field of an MCP execute arbitrary OS commands on Windows hosts that run fastmcp install cursor. This vulnerability is fixed in 2.13.0.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
fastmcpPyPI | < 2.13.0 | 2.13.0 |
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
3- github.com/advisories/GHSA-rj5c-58rq-j5g5ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2025-62801ghsaADVISORY
- github.com/jlowin/fastmcp/security/advisories/GHSA-rj5c-58rq-j5g5ghsax_refsource_CONFIRMWEB
News mentions
0No linked articles in our index yet.