Vulnerability Discovered in WordPress Plugin Ninja Forms Multiple Version

Ninja Forms is a popular WordPress plugin designed to enhance WordPress sites with easily customizable forms.  A vulnerability was recently discovered which allows unauthenticated attackers to call static methods on a vulnerable site that could be used for the site. This can be used to completely take over a WordPress site.

The issue has been fixed in Version 3.6.11 which is available now from the WordPress Plugin Repo.