Security Issues in Copilot Workspace Code
Critical security vulnerabilities commonly found in Copilot Workspace-generated apps. Learn what to check and how to fix them before going to production.
Security risks in Copilot Workspace apps
Copilot Workspace may generate changes that introduce subtle security regressions — removing an authentication check while refactoring, weakening an authorization rule while simplifying code, or adding a new endpoint without the authentication middleware that other endpoints use. Changes are broad and easy to miss in review
How to fix them
Pay special attention to any authentication or authorization code in Copilot Workspace PRs. Run SAST tools on the PR diff. Ensure your CI pipeline includes security checks that run on every PR. Never approve a Copilot Workspace PR solely based on the high-level description — read the actual diff
Authentication and authorization
Every Copilot Workspace 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 Copilot Workspace 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 Copilot Workspace-Built App
Step-by-step guide to deploying your Copilot Workspace app to production.
Common Bugs in Copilot Workspace-Generated Code
The most common bugs we find in Copilot Workspace apps and how to fix them.
Optimizing Copilot Workspace-Generated Code for Performance
How to make your Copilot Workspace app faster.
Adding Tests to Your Copilot Workspace Project
How to add a testing framework to your Copilot Workspace app.
Related technologies
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