Webflow

Security Guide

How to Secure Your Webflow App

Last updated: January 12, 2026

Webflow handles hosting security, but you're responsible for application-level security. This guide covers securing Webflow websites.

Get Starter Scan Webflow Security Overview

Why Security Matters for Webflow

Key Security Concerns

Custom code embeds can introduce XSS if pasting untrusted code

CMS reference fields can expose linked content if visibility not configured

Third-party embeds (scripts, iframes) inherit their security issues

Form submissions sent via email or webhooks - no built-in validation

Client-side only - can't implement server-side security logic

Security Strengths

Managed AWS hosting with automatic SSL and CDN

No server-side code = no SQL injection, no backend vulnerabilities

CMS data is read-only on published site (edits only in designer)

SOC 2 Type II certified with enterprise options

Automatic security updates - no patching required

Step-by-Step Security Guide

1. Protect Forms with reCAPTCHA

Enable reCAPTCHA on forms to prevent bot submissions and spam.

2. Secure Custom Code

Review all embedded JavaScript for security issues. Never put API keys in custom code.

3. Use Server-Side for Secrets

Webflow is client-side. Use serverless functions or proxies for any API calls requiring secret keys.

4. Verify SSL Configuration

Ensure HTTPS is enabled and enforced for your domain.

5. Audit Third-Party Scripts

Review any embedded scripts from third parties. They can access your page content.

6. Protect CMS Content

Configure CMS collection visibility appropriately. Don't store secrets in CMS fields.

Common Security Mistakes

Avoid these common Webflow security pitfalls:

API keys in custom code

Forms without spam protection

Untrusted third-party scripts

Sensitive data in CMS collections

Missing SSL on custom domains

Recommended Security Tools

Use these tools to maintain security throughout development:

VAS Security Scanner

npm audit / yarn audit

Git-secrets

Snyk

Ready to Secure Your App?

Security is an ongoing process, not a one-time checklist. After implementing these steps, use VAS to verify your Webflow app is secure before launch, and consider regular scans as you add new features.

Start Security Scan

Frequently Asked Questions

How do I hide API keys in Webflow?

You can't hide secrets in Webflow's client-side code. Use Webflow's native integrations, Zapier, or serverless functions to make API calls requiring secret keys.

Is Webflow secure?

Webflow handles hosting security (SSL, DDoS protection). You're responsible for form security, custom code safety, and third-party script auditing.

Explore Related Resources