Lab: Reflected XSS into HTML context with most tags and attributes blocked
Summary: PortSwigger's lab presents a reflected cross-site scripting vulnerability in a search function, protected by a web application firewall that blocks common XSS vectors. The goal is to bypass the WAF and call the print() function without any user interaction, using Burp Intruder and the exploit server.
Bottom line: A WAF that blocks standard XSS payloads still leaves the underlying reflected flaw exploitable, and this lab's requirement that the attack need no user interaction shows how a bypass can fire without a victim clicking anything.
Read the original at PortSwigger Research ↗
- Topics
- Vulnerabilities & Patching
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