CVE-2025-62801: medium-severity vulnerability in jlowin fastmcp
FastMCP vulnerable to windows command injection in FastMCP Cursor installer via server_name
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.4epss 0.2%
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.
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
jlowin · fastmcpRelated CVEs — jlowin fastmcp
In the same product, most dangerous first.
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