What vulnerabilities are found in Vercel apps?
Get instant answers about your app's security.
Short Answer
Vercel app scans surface the same cluster of vulnerabilities repeatedly: environment variable misconfiguration, preview deployment exposure, missing security headers. The pattern is stable across Vercel versions.
Detailed Answer
The vulnerabilities actually found in Vercel apps
Not theoretical OWASP categories — specifically what appears when VAS, security researchers, and bug bounty hunters look at live Vercel deployments:
- **[HIGH]** **Environment Variable Misconfiguration** *(medium likelihood)*
Secrets in wrong scope (Development vs Preview vs Production).
*Fix:* Audit variable scopes in Vercel dashboard. Use correct environment targeting.
2. **[MEDIUM]** **Preview Deployment Exposure** *(medium likelihood)*
Preview URLs expose unreleased features without authentication.
*Fix:* Enable Vercel Authentication for preview deployments.
3. **[MEDIUM]** **Missing Security Headers** *(high likelihood)*
Deployed sites without CSP, HSTS, or frame protection.
*Fix:* Configure headers in next.config.js or vercel.json.
4. **[HIGH]** **Serverless Function Logging** *(low likelihood)*
Secrets accidentally logged in function console output.
*Fix:* Remove debug logging. Never console.log sensitive data.
5. **[MEDIUM]** **Edge Function Security Gaps** *(low likelihood)*
Edge functions with improper auth or CORS configuration.
*Fix:* Verify auth in all edge functions. Configure CORS strictly.
Distribution by severity
Of the findings above, 0 sit at critical impact (full data exposure), 2 at high (significant data or account compromise), and the rest are medium-or-lower (attack surface expansion). A first-scan Vercel app typically has 2–4 findings from this list live at any moment.
How to know which ones are in your app
Run a VAS scan. Each finding above is tested directly — we query your database to verify access controls are active, scan bundles for key patterns, probe auth endpoints for rate limiting, and check security headers in live responses. Output is a per-finding report with evidence and fix.
Security Research & Statistics
of Lovable applications (170 out of 1,645) had exposed user data in the CVE-2025-48757 incident
Source: CVE-2025-48757 security advisory
average cost of a data breach in 2023
Source: IBM Cost of a Data Breach Report 2023
developers using vibe coding platforms like Lovable, Bolt, and Replit
Source: Combined platform statistics 2024-2025
Expert Perspectives
“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.”
“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.”
Check Your Vercel App's Security
VAS scans for all the security issues mentioned above. Get a comprehensive security report in minutes.
Get Starter ScanMore Questions About This Topic
How severe are the vulnerabilities typically found in Vercel apps?
Vercel apps lean critical: Environment Variable Misconfiguration alone can expose the full user dataset in one query. Compare to e.g. missing security headers (medium) which require additional exploitation. Triage accordingly: critical findings are measured in minutes-to-breach, mediums in weeks.
How do I fix vulnerabilities once they're found in my Vercel app?
Each finding comes with a specific fix. Example: for "Environment Variable Misconfiguration" → Audit variable scopes in Vercel dashboard. Use correct environment targeting. VAS exports these as markdown you can feed directly into Vercel's AI (or any other AI assistant) to apply the fix in-place. Re-scan afterward to confirm.
Can vulnerabilities in Vercel apps be exploited by a non-expert attacker?
Most can. Extracting an exposed API key is a single "view source" operation. Querying a table without RLS is a `curl` command. Exploiting missing rate limiting requires scripting skills equivalent to "follow a tutorial." Only a handful of the findings above (e.g., chained auth bypass) require specialist knowledge — the rest are routinely exploited by automated scanners with zero human involvement.
Explore Related Resources
Related Guides
Related Vulnerabilities
More on Vercel Security
Every angle of Vercel security — from the specific findings we detect to step-by-step fixes.
Vercel Security Scanner
Hub page: scan your Vercel app for vulnerabilities.
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.