The Float menu WordPress plugin before 5.0.3 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/3c76d0f4-2ea8-433d-afb2-e35e45630899