You can use XSS to steal user credentials or execute any other malicious code on the target website. By default, most of the CMS like WordPress, Drupal, Joomla, etc., limit access to certain parts of the site on the basis of logged-in user. So, if you are logged-in user on any of your target website, you can inject arbitrary code in that website and take control over it. You can do XSS injection on any website, even if it is running on a different CMS. All you need to inject code is a valid URL. Most of the CMS do not have any input validation. XSS can be used to steal data from the target site in two ways. You can directly inject code that takes data from the target site and sends it to the attacker’s server. Or you can trick the target site into believing that the attacker’s server is the real source and take data from the target site. In either case, the goal is the same. Now, let’s see how XSS can be used to steal data from the target site.

Stealing User Credentials Using XSS

The most common way of stealing user credentials using XSS is to trick the target site into thinking that the attacker’s server is the real source. Most of the CMS use GET or POST requests to send data to their servers. So, in order to steal data from the target site without alerting them, you need a valid URL that sends a request containing user credentials. The following code snippet shows how this is done.

Stealing User Credentials using XSS

Let’s say you are logged-in user on the target website. Now, you want to steal data from the target site. The way you can do this is by injecting an XSS payload to steal the user credentials using JavaScript. For example, if the target website is running WordPress, then you need to inject a URL containing malicious code like

Timeline

Published on: 09/20/2022 06:15:00 UTC
Last modified on: 09/21/2022 16:35:00 UTC

References