Security Issues in Trae Code
Critical security vulnerabilities commonly found in Trae-generated apps. Learn what to check and how to fix them before going to production.
Security risks in Trae apps
Trae-generated backends commonly have no authentication on API endpoints, no input validation, and SQL queries built with string concatenation. The frontend may store auth tokens in localStorage without expiry handling. Admin-level functionality is often gated by client-side checks only, with no server-side enforcement
How to fix them
Add JWT or session-based authentication middleware to all backend routes. Replace string-concatenated queries with parameterized statements or an ORM. Move auth tokens to httpOnly cookies with appropriate expiry. Duplicate all authorization checks on the server — never trust client-side role checks. Add rate limiting to login and registration endpoints
Authentication and authorization
Every Trae app needs authentication — verifying who the user is — and authorization — verifying what they're allowed to do. Check that every API route and server action verifies the user's identity before processing requests. Check that users can only access their own data. A common Trae pattern is adding auth to the UI but not the API, which means anyone with the endpoint URL can access data directly.
Data validation
Never trust data coming from the client. Every form submission, URL parameter, and API request body should be validated server-side before processing. Use a schema validation library like Zod to define expected shapes and reject anything that doesn't match. This prevents injection attacks, data corruption, and unexpected crashes.
Security headers
Configure security headers to protect against common web attacks: Content-Security-Policy to prevent XSS, Strict-Transport-Security to enforce HTTPS, X-Frame-Options to prevent clickjacking, and X-Content-Type-Options to prevent MIME sniffing. Most hosting platforms let you configure these in a headers file or configuration.
When to get a professional review
If your app handles user data, processes payments, or stores sensitive information, a professional security review is essential before launch. Our security scan ($19) checks for the most critical vulnerabilities, and our full security review service provides a comprehensive assessment with remediation guidance.
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Related guides
How to Deploy Your Trae-Built App
Step-by-step guide to deploying your Trae app to production.
Common Bugs in Trae-Generated Code
The most common bugs we find in Trae apps and how to fix them.
Optimizing Trae-Generated Code for Performance
How to make your Trae app faster.
Adding Tests to Your Trae Project
How to add a testing framework to your Trae app.
Related technologies
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