Here is the key information summary about this vulnerability: Vulnerability Type: SQL Injection Affected Product: Simple Realtime Quiz System Product URL: https://www.sourcecodester.com/php/14487/simple-realtime-quiz-system-using-phpmysql-source-code.html Affected Version: 1.0 Privilege Escalation: Risk of privilege escalation exists POC (Proof of Concept): - Username: - Password: Any character (e.g., ) allows login - HTTP Request Example: HTTP Response: