The Calculated Fields Form WordPress plugin before 5.2.64 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/925de4af-fc71-45ae-8454-7e4f70be13ca/