Smart Forms < 2.6.96 - Admin+ Stored XSS

Description The plugin 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)

PoC

1. Add a new form or edit an existing form 2. In the CSS field, enter the payload `alert(/XSS: CSS/)alert(/XSS: after submit alert /)