Input validation vulnerability in Knowledge Base 2.3.1

The Knowledge Base plugin for WordPress has a security issue that allows hackers to insert harmful code into certain pages. This can happen if the plugin slug setting is not properly checked and sanitized. This vulnerability affects all versions of the plugin up to 2.3.1 and can only be exploited by users with administrator access. However, it only affects websites with multiple installations or those that have a specific security setting disabled.