SQL Injection Challenges

Learn about SQL injection vulnerabilities in a safe, educational environment

About This Platform

This is an educational platform designed to teach you about SQL injection vulnerabilities. You'll learn how these attacks work by practicing on deliberately vulnerable systems.

Important: These challenges are for educational purposes only. In many countries (including the UK), using SQL injection attacks on systems without authorization is illegal and can result in up to 6 months in jail.

Learn more about UK Computer Misuse Act

Available Challenges

1 Blind SQL Injection Challenge

Learn how blind SQL injection attacks work. You'll discover how attackers can extract information from a database even when error messages are hidden.

Skills you'll learn:

  • Boolean-based blind SQL injection
  • Using EXISTS subqueries
  • Password enumeration techniques
  • LIKE pattern matching for data extraction

2 UNION-Based SQL Injection Challenge

Master UNION-based SQL injection attacks. Learn how to extract data from multiple tables and discover database structure.

Skills you'll learn:

  • UNION query construction
  • Information schema exploitation
  • Table and column enumeration
  • Data extraction from multiple tables

3 Time-Based Blind SQL Injection Challenge

Discover time-based blind SQL injection techniques. Learn how attackers extract data by measuring query execution times when boolean responses are identical.

Skills you'll learn:

  • Time-based injection with SLEEP()
  • Conditional delays with CASE
  • Character-by-character extraction
  • Timing-based data inference

4 Error-Based SQL Injection Challenge

Master error-based SQL injection attacks. Learn how to extract sensitive data directly from database error messages.

Skills you'll learn:

  • Forcing database errors
  • Extracting data from error messages
  • Using UNION queries for data extraction
  • Type conversion errors

5 Stacked Queries SQL Injection Challenge

Understand stacked queries (batched queries) injection. Learn how attackers execute multiple SQL statements in a single request.

Skills you'll learn:

  • Executing multiple queries with semicolons
  • Data extraction via stacked queries
  • Understanding query batching
  • Security implications of stacked queries

⚠️ Legal Warning

These challenges are provided for educational purposes on a deliberately vulnerable test system. Using SQL injection attacks on real systems without authorization is illegal in many jurisdictions.

I've set up this vulnerable test system so you can practice safely. I promise not to prosecute.