The WordPress Jitsi Shortcode WordPress plugin through 0.1 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/25851386-eccf-49cb-afbf-c25286c9b19e/