How to Advanced Techniques to Bypass & Defeat XSS Filters, Part 2

Cross-site scripting can be one of the easiest vulnerabilities to discover, but to be successful with this type of attack, it is essential to learn how to get past filters. In the previous guide, we explored some ways to do this, such as abusing attributes and event handlers and tricking the application into accepting unusual characters. Now, let’s take a look at more techniques used to defeat filters.
Existing JavaScript & Character Escaping
There is no doubt that scripting languages like JavaScript have dramatically increased the functionality of web technologies, allowing for efficient… more

Link: https://null-byte.wonderhowto.com/how-to/advanced-techniques-bypass-defeat-xss-filters-part-2-0190959/