Netsparker Cloud helps large organizations ensure the security of all their websites, web applications and web services. It allows them to automatically identify vulnerabilities and security flaws in them and easily ensure all of them are remediated, even if they have hundreds and thousands of websites and web applications.
Off-the-shelf web applications such as WordPress and Drupal, and libraries & frameworks such as AngularJS and jQuery are commonly used in modern business-centric websites and web applications. And like any other web application and software these off-the-shelf web components have their own security flaws.
Therefore if they are not kept up to date (and let's face it, we all forget about that components we use in our web applications!) they will render the website vulnerable to malicious hack attacks, as happened in one of the most high profile information disclosure hack attacks.