Input validation vulnerability in Formsite | Embed online forms to collect orders, registrations, leads, and surveys 1.6

The Formsite plugin for WordPress, which allows users to embed online forms for collecting orders, registrations, leads, and surveys, has a vulnerability that could potentially allow attackers to inject harmful code into pages. This can happen because the plugin does not properly protect against malicious input and output. As a result, attackers with contributor-level access or higher could insert their own code into pages, which would then execute whenever someone visits that page.