In Bootstrap before 3.4.1 and 4.3.x before 4.3.1, XSS is possible in the tooltip or popover data-template attribute.
https://www.tenable.com/security/tns-2021-14
https://www.oracle.com/security-alerts/cpuApr2021.html
https://support.f5.com/csp/article/K24383845?utm_source=f5support&%3Butm_medium=RSS
https://support.f5.com/csp/article/K24383845
https://seclists.org/bugtraq/2019/May/18
https://github.com/twbs/bootstrap/releases/tag/v4.3.1
https://github.com/twbs/bootstrap/releases/tag/v3.4.1
https://github.com/twbs/bootstrap/pull/28236
https://blog.getbootstrap.com/2019/02/13/bootstrap-4-3-1-and-3-4-1/
https://access.redhat.com/errata/RHSA-2019:3024
https://access.redhat.com/errata/RHSA-2019:3023
https://access.redhat.com/errata/RHSA-2019:1456
http://www.securityfocus.com/bid/107375
http://seclists.org/fulldisclosure/2019/May/13
http://seclists.org/fulldisclosure/2019/May/11
http://seclists.org/fulldisclosure/2019/May/10
http://packetstormsecurity.com/files/156743/OctoberCMS-Insecure-Dependencies.html