How to Fix SQL Injection Vulnerability in AI-Built Apps
Your application is vulnerable to SQL injection attacks because AI-generated code concatenates user input directly into SQL queries. This can expose or destroy your entire database.
Error messages you might see
Error: unterminated quoted string at or near "'; DROP TABLE users; --"Warning: Possible SQL injection detected in query constructionWhy this happens in AI-generated code
String concatenation in queries
AI builds SQL strings by interpolating user input directly: `SELECT * FROM users WHERE id = ${userId}`.
Missing input validation
User input is passed to queries without type checking, length limits, or sanitization.
Raw queries instead of ORM
AI uses raw SQL queries for simple operations that an ORM could handle safely with parameterized queries.
How to fix it
Use parameterized queries
Always use `$1, $2` placeholders: `db.query('SELECT * FROM users WHERE id = $1', [userId])`. Never interpolate directly.
Use an ORM for standard operations
Use Drizzle, Prisma, or similar ORM that automatically parameterizes all queries.
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Frequently asked questions
How do I test for SQL injection?
Try entering `'; DROP TABLE test; --` in input fields. Use tools like sqlmap for automated testing against your endpoints.
Are ORMs immune to SQL injection?
Standard ORM queries are safe, but raw query methods (like Prisma.$queryRaw) can still be vulnerable if you interpolate input.
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