The SiteOrigin Widgets Bundle plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `data-url` DOM Element Attribute in all versions up to, and including, 1.68.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
https://plugins.svn.wordpress.org/so-widgets-bundle/tags/1.68.4/js/slider/jquery.slider.js