During a security research I found an authenticated Stored XSS vulnerability.
The name of the plugin is: Top Bar < 3.0.4
The plugin does not sanitise and escape some of its settings before outputting them in frontend pages, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)
The PoC will be displayed on October 03, 2022, to give users the time to update.
Plugin has more than 20,000+ active installations.