The LearnPress WordPress plugin before 4.2.7.5.1 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).
https://wpscan.com/vulnerability/1506a339-f85a-408a-8efa-ca83eb3b3ffb/