Sql Injection Challenge 5 Security Shepherd Jun 2026

: The application likely uses a query similar to: SELECT * FROM coupons WHERE couponCode = "[YOUR_INPUT]" AND status = 'active'

SQL Injection Challenge 5 from Security Shepherd is a web-app training exercise that demonstrates a common but subtle SQL injection pattern: blind inference attacks against application logic that uses dynamic queries and insufficient input handling. The goal of this write-up is to explain the challenge’s likely design, the vulnerability class it teaches, the exploitation methodology, and remediation strategies developers can apply. Sql Injection Challenge 5 Security Shepherd

Whitelist allowable characters. If a username should only be alphanumeric, reject input containing ' , - , or spaces. : The application likely uses a query similar