node-sass is a Node.js bindings package for libsass.
Affected versions of this package are vulnerable to Use After Free. A use-after-free vulnerability exists in
sass_context.cpp in LibSass 3.4.x and 3.5.x through 3.5.4 that could be leveraged to cause a denial of service (application crash) or possibly unspecified other impact.
node-sass is affected by this vulnerability due to its usage of
node-sass to version 4.13.1 or higher.