The Frontend Checklist WordPress plugin through 2.3.2 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/449e4da8-beae-4ff6-9ddc-0e17781c0391/