Still appears to be an issue – plugin version 4.0.2
Info:?In Select2 through 4.0.5, as used in Snipe-IT and other products, rich selectlists allow XSS. This affects use cases with Ajax remote data loading when HTML templates are used to display listbox data.
File:?/wp-content/plugins/stream/ui/lib/select2/js/select2.min.js