The Form Builder | Create Responsive Contact Forms WordPress plugin before 1.9.8.4 does not sanitise or escape its Form Title, allowing high privilege users such as admin to set Cross-Site Scripting payload in them, even when the unfiltered_html capability is disallowed
https://wpscan.com/vulnerability/a1dc0ea9-51dd-43c3-bfd9-c5106193aeb6