Input validation vulnerability in Backend Designer 1.3

The plugin called “Backend Designer” for WordPress has a security issue that allows hackers to inject harmful code into a website. This can happen if the website has not been properly protected and the plugin is not up to date. The vulnerability affects all versions up to and including 1.3, and can only be exploited by hackers who have administrator-level access to the website. This means that they can insert their own code into certain pages, which will then run whenever someone visits that page. This only applies to websites with multiple pages and those that have disabled a certain security feature.