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merge-deep@1.0.3 vulnerabilities

Recursively merge values in a javascript object.

  • latest version

    3.0.3

  • latest non vulnerable version

    3.0.3

  • first published

    11 years ago

  • latest version published

    4 years ago

  • licenses detected

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    Direct Vulnerabilities

    Known vulnerabilities in the merge-deep package. This does not include vulnerabilities belonging to this package’s dependencies.

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    VulnerabilityVulnerable Version
    • H
    Prototype Pollution

    merge-deep is a recursively merges values in a javascript object.

    Affected versions of this package are vulnerable to Prototype Pollution. Merge-deep actively attempts to prevent prototype pollution by blocking object property merges into __proto__, however it still allows for prototype pollution of Object.prototype via a constructor payload.

    PoC

    var mergeDeep = require("merge-deep");
var payload = '{"constructor": {"prototype": {"isAdmin": true}}}';
mergeDeep({}, JSON.parse(payload));

    How to fix Prototype Pollution?

    Upgrade merge-deep to version 3.0.3 or higher.

    <3.0.3
    • M
    Prototype Pollution

    merge-deep is a recursively merges values in a javascript object.

    Affected versions of this package are vulnerable to Prototype Pollution via merging functions. These functions allows a malicious user to modify the prototype of Object via __proto__, causing the addition or modification of an existing property that will exist on all objects.

    How to fix Prototype Pollution?

    Upgrade merge-deep to version 3.0.1 or higher.

    <3.0.1
    Go back to all versions of this package