The Jeeng Push Notifications WordPress plugin before 2.0.4 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/33b52dd7-613f-46e4-b8ee-beddd31689eb