Severity: high

    Prototype Pollution

    lodash

    Overview

    Versions of lodash before 4.17.5 are vulnerable to prototype pollution.

    The vulnerable functions are 'defaultsDeep', 'merge', and 'mergeWith' which allow a malicious user to modify the prototype of Object via {constructor: {prototype: {...}}} causing the addition or modification of an existing property that will exist on all objects.

    Remediation

    Update to version 4.17.11 or later.

    Resources

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    Advisory timeline

    1. published

      Advisory Published
      Feb 13th, 2019
    2. reported

      Reported by asgerf
      Feb 13th, 2019