The User Meta WordPress plugin before 2.4.3 does not sanitise and escape the Form Name, as well as Shared Field Labels before outputting them in the admin dashboard when editing a form, which could allow high privilege users to perform Cross-Site Scripting attacks even when unfiltered_html is disallowed
https://wpscan.com/vulnerability/a3ca2ed4-11ea-4d78-aa4c-4ed58f258932