Online IDE with AI code generation
Replit's AI agent builds and deploys apps in its cloud environment. The shared hosting model and AI-generated code create unique security challenges — exposed ports, insufficient access controls, and secrets stored in plaintext Replit environment variables.
While Replit Secrets are encrypted, they're accessible to anyone with edit access to the Repl.
Limit collaborator access. Rotate secrets if shared with untrusted users.
Replit exposes ports publicly by default, potentially leaking debug endpoints.
Ensure only production-ready endpoints are accessible. Disable debug modes.
AI-generated Express/Flask APIs often lack auth middleware.
Add authentication to every route that accesses user data or performs mutations.
Generated file upload handlers lack type validation and size limits.
Validate file types, enforce size limits, and store files outside the web root.
Database URLs with credentials appear directly in source code.
Move all connection strings to environment variables.
Use Replit's built-in Secrets manager — never put credentials in your code.
Before sharing a Repl publicly, run Erzo's Secret Scanner on the entire codebase.
Consider migrating to a dedicated hosting provider for production apps.