The Ultimate Bootstrap Elements for Elementor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘heading_title_tag’ and ’heading_sub_title_tag’ parameters in all versions up to, and including, 1.3.6 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
plugins.trac.wordpress.org/browser/ultimate-bootstrap-elements-for-elementor/tags/1.3.6/templates/elements/heading.php
plugins.trac.wordpress.org/browser/ultimate-bootstrap-elements-for-elementor/tags/1.3.6/templates/elements/heading.php
www.wordfence.com/threat-intel/vulnerabilities/id/ed191380-6037-4d59-8db7-cb33136a304e?source=cve