Vercel Security Scanner
Deploying to Vercel? Make sure your environment variables and serverless functions are properly secured.
Enter your deployed app's URL. Review the findings, take the suggested fixes to your coding tool, and retest after making changes.
First scan free: issue counts and one finding revealed in detail. No card required.
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 check the reachable app for exposed secrets, browser protections, authentication issues and database access problems. A standard scan typically takes a few minutes; blocked requests or incomplete coverage are reported.
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 does a VAS scan of a Vercel app check?
VAS checks the deployed pages, scripts and endpoints it can reach for issues including env variable security, serverless security, headers config, auth protection. The report records findings and coverage limits; it does not certify the whole app as secure.
What will I receive in the report?
Findings include severity, supporting evidence and remediation guidance. Your first scan is free, with issue counts and one finding revealed in detail. Paid report access unlocks every finding. Use Export for AI to bring available findings into your coding tool, review the proposed changes and retest.
Can a scan verify every permission and private workflow?
No. Coverage depends on reachable pages, discovered endpoints and enabled checks. Configure a test login for supported authenticated checks. Review source code and business-specific permissions separately. Zero findings does not prove an app is secure.
Does VAS change my code or database policies?
VAS provides recommendations, not automatic fixes. Adapt any suggested policy or code change to your data model, test that permitted users still have access and that other users do not, then rescan. Read checks alone cannot confirm insert, update or delete permissions.
What should I know before scanning a production app?
Only scan apps you own or have permission to test. Scan requests can trigger firewall rules, logs and rate limits. Review enabled checks, and use staging or dedicated test accounts for sensitive workflows. Active tests, where enabled, need separate care because they can make changes.
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
Rescan after deploying a fix to check whether the original finding still appears. Compare the evidence and coverage with the previous report. For permissions and private workflows, also repeat the relevant tests with authorized and unauthorized test users.
Check your Vercel app
Find observable security issues in your deployed app, review the evidence and take the next steps with your coding tool.
Start with a free scan. See issue counts and one finding in detail, then decide whether you need full report access.
More 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.
What People Say About Vercel Security
Community sentiment on Vercel security, compared with our scan data.
Vercel with your database
The security gaps we find depend on which database sits behind Vercel.