Vercel Security Scanner
Deploying to Vercel? Make sure your environment variables and serverless functions are properly secured.
Our automated security scanner analyzes your Vercel application for vulnerabilities, misconfigurations, and exposed secrets. Get a comprehensive security report in minutes, not days.
Vercel Deployment Security Considerations
Vercel makes development fast, but AI-generated code often skips security best practices:
- !Environment variables exposed to wrong environments
- !Serverless function timeouts and memory limits
- !Preview deployments may expose sensitive data
- !Edge function security considerations
Where Security Breaks in Vercel Apps
Built on Supabase (Postgres + RLS), Vercel applications share a recognizable fingerprint — which means attackers and automated scanners find them the same way every time. Based on real vulnerability patterns in Vercel deployments, the breakdown is 0 critical-impact issues, 2 high-impact, and 3 medium-or-lower.
Environment Variable Misconfiguration
Secrets in wrong scope (Development vs Preview vs Production).
Fix: Audit variable scopes in Vercel dashboard. Use correct environment targeting.
Preview Deployment Exposure
Preview URLs expose unreleased features without authentication.
Fix: Enable Vercel Authentication for preview deployments.
Missing Security Headers
Deployed sites without CSP, HSTS, or frame protection.
Fix: Configure headers in next.config.js or vercel.json.
Serverless Function Logging
Secrets accidentally logged in function console output.
Fix: Remove debug logging. Never console.log sensitive data.
Edge Function Security Gaps
Edge functions with improper auth or CORS configuration.
Fix: Verify auth in all edge functions. Configure CORS strictly.
What We Check
Env Variable Security
Check environment variable configuration and exposure.
Serverless Security
Analyze serverless functions for vulnerabilities.
Headers Config
Verify security headers in vercel.json.
Auth Protection
Check authentication on protected routes.
What You'll Get
Why Vercel Apps Need Security Scanning
Vercel is a popular deployment platform for Next.js and other frameworks. Its ease of use can lead to security oversights in environment configuration and serverless function implementation.
Properly configured, Vercel is very secure. VAS helps verify your deployment follows best practices.
How Vercel Security Scanning Works
Submit Your URL
Enter your Vercel application URL. Our scanner automatically detects your tech stack and configures the appropriate security checks for Vercel.
Automated Analysis
We scan for exposed secrets, security headers, authentication issues, database misconfigurations, and Vercel-specific vulnerabilities. The scan typically completes in 15-20 minutes.
Get Actionable Results
Receive a detailed report with prioritized vulnerabilities, severity ratings, and step-by-step remediation guidance with code examples specific to Vercel.
Common Questions About Vercel Security
What vulnerabilities are most common in Vercel apps?
The top finding classes in Vercel apps: environment variable misconfiguration; preview deployment exposure; missing security headers.
What does a VAS scan of a Vercel app check?
The scan probes your deployed app for the specific findings above: env variable security, serverless security, headers config, auth protection. It actually attempts each vulnerability class (not just header inspection) and reports results with severity + fix for each.
Is running a scan safe for production?
Yes. The scanner uses read-only probes against public endpoints — no data modification, no destructive tests. Scans typically finish in 15–20 minutes and will not impact application availability.
Remediation Playbook for Vercel
Priority-ordered fixes for the specific findings we see in Vercel apps. Critical items close data-exposure gaps; high items prevent compromise; medium items reduce attack surface. Applies to apps using Supabase (Postgres + RLS) — the dominant Vercel stack.
1. Environment Variable Misconfiguration
Why it matters: Secrets in wrong scope (Development vs Preview vs Production).
How to close it: Audit variable scopes in Vercel dashboard. Use correct environment targeting.
2. Preview Deployment Exposure
Why it matters: Preview URLs expose unreleased features without authentication.
How to close it: Enable Vercel Authentication for preview deployments.
3. Missing Security Headers
Why it matters: Deployed sites without CSP, HSTS, or frame protection.
How to close it: Configure headers in next.config.js or vercel.json.
4. Serverless Function Logging
Why it matters: Secrets accidentally logged in function console output.
How to close it: Remove debug logging. Never console.log sensitive data.
5. Edge Function Security Gaps
Why it matters: Edge functions with improper auth or CORS configuration.
How to close it: Verify auth in all edge functions. Configure CORS strictly.
Verify the fixes stuck
Run a VAS scan after applying each fix to confirm the gap is actually closed. "I applied the fix" is not evidence — the fix may have been partial, reverted, or not deployed. Re-scanning gives you proof, and a record for compliance if you ever need it.
Secure Your Vercel App
Don't let vulnerabilities compromise your hard work. Security issues in Vercel applications can lead to data breaches, unauthorized access, and damaged user trust. The average data breach costs startups between $120,000 and $1.24 million.
Run a Starter Scan in minutes — just $9. Scan before you launch and deploy with confidence knowing your application meets security best practices.
Get Starter ScanMore on Vercel Security
Every angle of Vercel security — from the specific findings we detect to step-by-step fixes.
Vercel Security Risks
Specific risks we find in Vercel apps, with real-world examples.
Vercel Security Issues
Issues grouped by severity with detection and fix steps.
Vercel Best Practices
Remediation playbook derived from Vercel's actual failure modes.
Is Vercel Safe?
Honest assessment of Vercel's production readiness.
Vercel Security Checklist
Pre-launch checklist covering every finding class for Vercel.
How to Secure Vercel Apps
Step-by-step hardening guide for Vercel deployments.
Can Vercel Apps Be Hacked?
Attack vectors specific to Vercel and how they get exploited.