Page Security & Membership <= 1.5.15 - Admin+ Stored Cross-Site Scripting

The plugin does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed

PoC

Put the following payload in the “Force Public Pages” settings of the plugin (/wp-admin/options-general.php?page=ps_manage_opts): ">