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.
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-20190.json"