In this module, you are presented with a "VIP Coupon Check" input field. The backend is designed to verify if a coupon code exists in a database and, if valid, display the discount amount and the associated item name.
The underlying vulnerability exists because the application uses to build the SQL query. Instead of treating your input as literal data, the server executes it as part of the SQL command itself. Technical Breakdown: The Vulnerability
What is SQL Injection? Tutorial & Examples | Web Security Academy
SQL Injection Challenge 5: Security Shepherd Walkthrough The (SQLi C5) in OWASP Security Shepherd is a practical lesson in identifying and exploiting poorly sanitized database queries. This specific level, titled "VIP Coupon Check," tasks users with bypassing a coupon validation system to retrieve sensitive data or flags. Challenge Overview
The Java source code for this challenge reveals how the query is constructed: