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/0a560ed4-7dec-4274-b4a4-39dea0c0d67e/