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    CVE-2025-56648

    npm parcel 2.0.0-alpha and before has an Origin Validation Error vulnerability. Malicious websites can send XMLHTTPRequests to the application's development server and read the response to steal source code when developers visit them.

    Published:Sep 17, 2025
    Last Modified:Jan 26, 2026
    EPS:Sep 17, 2025
    EPSS Score:0.00033
    CVSS Score:6.5

    Affected Products

    Vendor
    Parceljs
    Product
    Parcel

    Exploits

    https://gist.github.com/R4356th/41f468def606b2406e36f7193f5322b8https://github.com/parcel-bundler/parcel/issues/10216

    Common Weakness Enumeration

    CWE-346 Origin Validation Error

    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