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ShipSafe

ShipSafe
ShipSafe

Platform Security

Security Scanner for Replit Apps

Replit makes deployment instant, which means your vulnerabilities go live instantly too. ShipSafe finds exposed secrets, SQL injection, and missing auth before you hit Deploy.

Scan Your Replit ProjectView Pricing

From Prototype to Production Without a Safety Net

Replit removes every barrier between writing code and putting it on the internet. You write a prompt, Replit Agent builds the app, and one click later it's live at a public URL. That speed is Replit's greatest strength and its biggest security risk.

In a traditional workflow, code goes through review, staging, and testing before reaching users. With Replit, the code that the AI generated five minutes ago is already accepting requests from the internet. If that code has SQL injection, hardcoded secrets, or missing auth, the vulnerability is live immediately.

Replit Agent is particularly prone to these issues because it generates code in many languages and frameworks without consistent security patterns. See our vibe coding security checklist and the vulnerabilities by platform reference for the full breakdown.

Common Vulnerabilities in Replit Projects

These vulnerabilities appear across Python, Node.js, and other Replit-generated backends.

Critical

Exposed Secrets in Environment

Replit stores secrets in its Secrets tab, but Replit Agent and AI-generated code frequently hardcode API keys, database credentials, and tokens directly in source files. When you push to GitHub or deploy, these secrets go with it. Even when secrets are used correctly, misconfigured .replit files can expose them to forked projects.

Critical

Missing Authentication on Endpoints

Replit Agent generates Express or Flask routes that handle data operations without any auth middleware. Every endpoint is publicly accessible by default. Since Replit projects get a public URL immediately, these unprotected endpoints are exposed to the internet the moment you hit Run.

Critical

SQL Injection in Database Queries

Replit Agent commonly generates database queries by concatenating user input directly into SQL strings instead of using parameterized queries or an ORM. This lets attackers inject arbitrary SQL through form fields, URL parameters, or API payloads to read, modify, or delete your entire database.

High

Insecure CORS Configuration

Replit-generated backends typically include cors() middleware with no origin restrictions, allowing any website to make authenticated requests to your API. Combined with missing CSRF protection, this means any malicious site can perform actions on behalf of your logged-in users.

How ShipSafe Secures Your Replit App

1

Connect Your Replit Project

Link your GitHub repo or paste your Replit project code. ShipSafe supports Python, Node.js, and any other language or framework Replit generates.

2

Language-Agnostic Security Scan

ShipSafe scans for hardcoded secrets, SQL injection patterns, missing auth middleware, and CORS misconfigurations across all files and languages in your project.

3

Deploy-Ready Fix Report

Get a prioritized list of vulnerabilities with severity ratings and code fixes specific to your framework. Apply them before deploying from Replit to production.

Frequently Asked Questions

Is Replit code secure?
Replit makes it very easy to build and deploy applications, but neither Replit's environment nor its AI Agent add security measures by default. Code generated by Replit Agent typically lacks authentication, uses string concatenation for database queries, hardcodes secrets in source files, and configures CORS to allow all origins. You should always run a security scan before deploying a Replit project to production.
How do I secure my Replit app before deploy?
Run a ShipSafe scan to identify all vulnerabilities first. Then work through the fixes in priority order: move hardcoded secrets to Replit's Secrets tab and verify they are not in source files, add authentication middleware to every route that accesses user data, replace string-concatenated SQL with parameterized queries, and restrict your CORS configuration to only allow your frontend's origin.
Can ShipSafe scan Replit projects?
Yes. ShipSafe scans the source code of your Replit project regardless of language or framework. You can connect your GitHub repo if you have one linked, or paste your code directly. ShipSafe understands common Replit patterns including Express.js, Flask, FastAPI, and SQLite/PostgreSQL database access, and knows which security patterns to check for in each.
What vulnerabilities does Replit Agent create?
Replit Agent's most common security failures are: hardcoding secrets in source files instead of using environment variables, generating API routes without authentication checks, building SQL queries through string concatenation instead of parameterized queries, and adding wide-open CORS configurations. These issues exist because the Agent optimizes for making the app work, not for making it secure.
Does Replit's deployment process add security?
Replit's deployment infrastructure provides HTTPS and basic DDoS protection, but it does not add application-level security. Your code deploys exactly as written, with no automatic addition of authentication, input validation, or security headers. The deployment URL is publicly accessible, which means any vulnerabilities in your code are immediately exploitable once deployed.

Scan Before You Deploy from Replit

Replit makes deployment instant. Make sure your security is ready for it. Find and fix vulnerabilities in minutes.

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