Skip to main content

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')


Severity High
Score 9.8/10


A vulnerability classified as critical has been found in Furqan node-whois prior to 2.13.7. Affected is an unknown function of the file "". The manipulation leads to improperly controlled modification of object prototype attributes ('prototype pollution'). It is possible to launch the attack remotely. It is recommended to apply a patch to fix this issue.

  • LOW
  • HIGH
  • NONE
  • NONE
  • HIGH
  • HIGH

CWE-1321 - Prototype Pollution

Prototype pollution is one of the lesser-known vulnerabilities. It allows attackers to abuse the rules of JavaScript by injecting properties into the general object “Object” in JS. Modifying the prototype of “Object” affects the behavior of all objects in the entire app, potentially resulting in denial of service, arbitrary code execution, cross-site scripting, etc.

Advisory Timeline

  • Published