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    CVE-2026-16266

    Versions of the package mongo-object before 3.0.3 are vulnerable to Prototype Pollution via the expandKey() function in util.js. An attacker can modify the JavaScript prototype chain by supplying a crafted property path containing special keys such as __proto__.

    Published:Jul 21, 2026
    Last Modified:Aug 5, 2026
    EPS:Jul 21, 2026
    EPSS Score:0.00247
    CVSS Score:4

    Affected Products

    Vendor
    Longshotlabs
    Product
    Mongo-object

    Exploits

    No exploit reference

    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