The Video Widget WordPress plugin through 1.2.3 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/f0de62e3-5e85-43f3-8e3e-e816dafb1406/