Input validation vulnerability in Carousel Slider 2.2.9

The Carousel Slider tool used on WordPress websites has a security issue that allows hackers to insert harmful code into slides. This can happen on all versions up to 2.2.9 because the tool does not properly clean or protect the input and output. This means that people with certain levels of access to the website can add code that will run when someone views the affected page. This problem only affects websites with multiple pages and those that have disabled a specific security setting.