org.webjars.npm:merge-deep@3.0.2 vulnerabilities

  • latest version

    3.0.3

  • latest non vulnerable version

  • first published

    4 years ago

  • latest version published

    a year ago

  • licenses detected

  • package manager

Direct Vulnerabilities

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

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Vulnerability Vulnerable Version
  • H
Prototype Pollution

org.webjars.npm: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 org.webjars.npm:merge-deep to version 3.0.3 or higher.

[,3.0.3)