Beaver Builder < 2.7.4.3 - Contributor+ Stored XSS via Icon Widget

Description

The plugin is vulnerable to Stored Cross-Site Scripting via the Icon Widget 'fl_builder_data[node_preview][link]' and 'fl_builder_data[settings][link_target]' parameters due to insufficient input sanitization and output escaping, allowing 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.