The Quizlord plugin through 2.0 for WordPress is prone to Stored XSS via the title parameter in a ql_insert action to wp-admin/admin.php.

The Quizlord WordPress plugin through 2.0 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 (for example in multisite setup).