Bootstrap-3-Typeahead after version 4.0.2 is vulnerable to a cross-site scripting flaw in the highlighter() function. An attacker could exploit this via user interaction to execute code in the user's browser.
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10215
https://access.redhat.com/errata/RHSA-2019:3771
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00083.html