The YaDisk Files WordPress plugin through 1.2.5 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/165ab698-c8b5-4412-a621-c5365d621fc5/