The Pocket Widget WordPress plugin through 0.1.3 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/b1697646-1090-4a2b-9987-cec07428378e/