NuytsTech Security

CVE-2025-62801

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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.

More information : https://github.com/jlowin/fastmcp/security/advisories/GHSA-rj5c-58rq-j5g5

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