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    CVE-2025-62801

    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.

    Published:Oct 28, 2025
    Last Modified:Nov 4, 2025
    EPS:Oct 28, 2025
    EPSS Score:0.00025
    CVSS Score:7.8

    Affected Products

    Vendor
    Fastmcp
    Product
    Fastmcp
    Vendor
    Jlowin
    Product
    Fastmcp

    Exploits

    https://github.com/jlowin/fastmcp/security/advisories/GHSA-rj5c-58rq-j5g5https://github.com/jlowin/fastmcp/security/advisories/GHSA-rj5c-58rq-j5g5

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High