Input validation vulnerability in Calculated Fields Form 5.1.56

The Calculated Fields Form plugin for WordPress has a security issue that could allow hackers to inject harmful code into a website. This can happen because the plugin does not properly filter and protect user input. As a result, attackers can inject their own code onto a page, which will run whenever someone visits that page. This vulnerability affects all versions of the plugin up to and including 5.1.56. It can only be exploited if the professional version or higher is being used.