The IP Based Login WordPress plugin before 2.4.1 does not sanitise values when importing, 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/8f1ceca5-3b7b-4cf0-bccd-03e204e5bfad/