The Shariff Wrapper WordPress plugin before 4.6.10 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/0672f8af-33e2-459c-ac8a-7351247a8a26/