Security Scanner for Replit Apps
Replit's browser-based IDE and AI assistant make it easy to build and deploy apps instantly. But the platform's public-by-default repositories and simplified environment handling often lead to secret exposure and missing authentication. SimplyScan finds these gaps before attackers do.
Top Vulnerabilities in Replit Apps
- Public Repository Exposure · Replit repos are public by default on free plans. Secrets committed to these repos are visible to anyone, even after deletion · they remain in git history.
- Environment Variable Leaks · Replit Secrets work differently from traditional .env files. Misunderstanding the scoping can lead to secrets being exposed in client-side code.
- Missing Authentication · AI-generated Replit apps often lack proper auth flows, leaving admin routes and sensitive operations accessible to anyone with the URL.
- Database Credentials in Source · Connection strings for PostgreSQL, MongoDB, or Firebase are frequently hardcoded rather than stored in Replit Secrets.
- No Rate Limiting or CSRF Protection · Replit-deployed APIs typically lack rate limiting and CSRF tokens, making them vulnerable to abuse and cross-site attacks.
How SimplyScan Helps
- 51+ automated security and speed checks
- GitHub repository scanning for source-level issues
- Actionable fix guidance with severity ratings
- Downloadable PDF reports