Introduction

Hi everyone! Today, I’m going to show you a fast and efficient way to spot Cross-Site Scripting (XSS) vulnerabilities on any website. This method is designed to save you time and effort by using a powerful one-line command that runs several popular tools in sequence. By automating both the discovery and initial filtering steps, it helps you quickly pinpoint possible XSS points without manually checking every URL, making your testing workflow much faster and more streamlined.

Phase 1: Initial URL Discovery and Filtering

The first step is to gather all URLs for the target domain and filter out reflected and unfiltered special characters parameters using a single one-liner command that combines multiple tools.

echo example.com | gau | gf xss | uro | Gxss | kxss | tee xss_output.txt

But before we go any further let me explain these commands step by step:

• GAU: fetches old URLs from passive sources like WaybackURLs, AlienVault, Common Crawl and URLscan.