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    CVE-2025-65099

    Claude Code is an agentic coding tool. Prior to version 1.0.39, when running on a machine with Yarn 3.0 or above, Claude Code could have been tricked to execute code contained in a project via yarn plugins before the user accepted the startup trust dialog. Exploiting this would have required a user to start Claude Code in an untrusted directory and to be using Yarn 3.0 or above. This issue has been patched in version 1.0.39.

    Published:Nov 19, 2025
    Last Modified:Nov 25, 2025
    EPS:Nov 19, 2025
    EPSS Score:0.00102
    CVSS Score:9.8

    Affected Products

    Vendor
    Anthropic
    Product
    Claude Code
    Vendor
    Anthropics
    Product
    Claude Code

    Exploits

    https://github.com/b-faller/cve-2025-65099

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    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