bootstrap-select before 1.13.6 allows Cross-Site Scripting (XSS). It does not escape title values in OPTION elements. This may allow attackers to execute arbitrary JavaScript in a victim's browser.
https://www.npmjs.com/advisories/1522
https://snyk.io/vuln/SNYK-JS-BOOTSTRAPSELECT-570457
https://github.com/snapappointments/bootstrap-select/issues/2199