NULL Pointer Dereference Affecting node-sass package, versions <3.6.0



    Exploit Maturity Proof of concept
    Attack Complexity Low
    User Interaction Required
    Availability High
Expand this section
6.5 medium

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk ID SNYK-JS-NODESASS-535502
  • published 25 Nov 2019
  • disclosed 17 Dec 2018
  • credit Unknown

How to fix?

Upgrade node-sass to version 3.6.0 or higher.


node-sass is a Node.js bindings package for libsass.

Affected versions of this package are vulnerable to NULL Pointer Dereference. In LibSass 3.5.5, a NULL Pointer Dereference in the function Sass::Eval::operator()``(Sass::Supports_Operator*) in eval.cpp may cause a Denial of Service (application crash) via a crafted sass input file.