The uglify-js package before 2.6.0 for Node.js allows attackers to cause a denial of service (CPU consumption) via crafted input in a parse call, aka a "regular expression denial of service (ReDoS)."
https://github.com/advisories/GHSA-c9f4-xj24-8jqx
https://nodesecurity.io/advisories/48
https://euvd.enisa.europa.eu/vulnerability/EUVD-2017-0215