Security Analysis

Is Vercel Safe?

An honest security analysis of Vercel for developers considering it for their projects.

Quick Answer

Safe - strong security defaults

Vercel is very safe for production deployments with proper configuration. It has strong security defaults, but environment variables and preview deployments need careful management.

Security Assessment

Security Strengths

  • Enterprise-grade infrastructure
  • Automatic HTTPS
  • DDoS protection
  • SOC 2 Type II compliant
  • Environment variable encryption

Security Concerns

  • Preview deployments may expose data
  • Environment variable scope configuration
  • Serverless function security responsibility
  • Custom headers require manual setup

Security Checklist for Vercel

  • 1
    Configure environment variable scopes properly
  • 2
    Set up preview deployment protection
  • 3
    Add security headers in vercel.json
  • 4
    Review serverless function security
  • 5
    Enable deployment protection for production
  • 6
    Scan deployed apps for vulnerabilities

The Verdict

Vercel is a secure platform with excellent defaults. Properly configure environment variables and security headers for production deployments.

Security Research & Industry Data

Understanding Vercel security in the context of broader industry trends and research.

10.3%

of Lovable applications (170 out of 1,645) had exposed user data in the CVE-2025-48757 incident

Source: CVE-2025-48757 security advisory

4.45 million USD

average cost of a data breach in 2023

Source: IBM Cost of a Data Breach Report 2023

500,000+

developers using vibe coding platforms like Lovable, Bolt, and Replit

Source: Combined platform statistics 2024-2025

What Security Experts Say

Vibe coding your way to a production codebase is clearly risky. Most of the work we do as software engineers involves evolving existing systems, where the quality and understandability of the underlying code is crucial.

Simon WillisonSecurity Researcher, Django Co-creator

The problem with AI-generated code isn't that it doesn't work - it's that it works just well enough to ship, but contains subtle security flaws that are hard to spot.

Security Research CommunityCollective wisdom from security researchers

Verify Your Vercel App Security

Don't guess - scan your app and know for certain. VAS checks for all the common security issues in Vercel applications.