The Security Crisis in AI Code Generation—Why 45% of Models Write Vulnerable Code

Independent security research confirms that major AI code generation tools systematically produce code containing critical vulnerabilities, with 86% failure rates for basic XSS defenses. This isn't theoretical—developers using Cursor, Replit, and similar tools have already suffered real financial damage from exposed API keys and SQL injection flaws. For any developer deploying AI-generated code, understanding these six specific security failures and how to detect them has become essential.