Cross-site scripting (XSS) vulnerability in the serve-index package before 1.6.3 for Node.js allows remote attackers to inject arbitrary web script or HTML via a crafted file or directory name.
https://github.com/advisories/GHSA-v633-x5vv-hqwc
https://nodesecurity.io/advisories/34
https://euvd.enisa.europa.eu/vulnerability/EUVD-2017-0311