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Hi! Welcome to the next episode in the series called amp;quot;from 0 to pentesting heroamp;quot;. My name is Kacper Szurek and today we are going to search for some vulnerabilitis in the code responsible for XML parsing. Here is the example Java code. It retrieves the content of the file and then parses it using DocumentBuilder. In the last line we get the documentamp;#39;s root element and display it. What does the input file have inside? It starts with the xml declaration and then the version attribute, which is required here. If we do not provide a version - the file can not be processed and we will get an error message. Next, the amp;quot;testamp;quot; root element is defined with the sample value: amp;quot;demoamp;quot;. So if our code example works properly, we should see a amp;quot;demoamp;quot; string on the screen. The XML standard, however, is much more developed. One of the additional functionalities is the ability to create entities. They are similar to macros, for