HTML Injection: Reflected (Get & POST) [Low & Medium Security Level]

In this video, I explain how to solve the HTML Injection – Reflected (GET and POST) challenge in bWAPP at both Low and Medium security levels. This lab demonstrates how user-controlled input is directly reflected in the browser without proper sanitization, leading to HTML Injection vulnerabilities. I walk through the exploitation process step by step, showing how attackers can inject malicious HTML payloads via both GET and POST methods. At the Low security level, the application performs no input filtering, making it straightforward to inject HTML tags and observe their execution in the browser. At the Medium level, basic filtering is introduced, and I demonstrate practical techniques to bypass these protections. This video will help you understand: The core concept of reflected HTML Injection Differences between GET and POST-based injection points How improper input validation leads to client-side attacks Basic filter bypass techniques used in real-world scenarios This is useful for beginners in web security, penetration testers, and anyone preparing for bug bounty, Web Pentest or CTF challenges.