The URL Shortify WordPress plugin before 1.7.0 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/5717d729-c24b-4415-bb99-fcdd259328c4