To secure a Lovable + Tailwind CSS stack, you need to: (1) never construct class names from user input to prevent CSS injection, (2) configure Content Security Policy headers, (3) ensure Tailwind's content config includes all templates, and (4) verify production builds remove unused styles. This blueprint covers CSS security considerations and build configuration.
TL;DR
Tailwind CSS itself doesn't introduce security vulnerabilities, but how classes are applied matters. Key concerns: never construct class names from user input (potential XSS via CSS injection), use Content Security Policy headers, and ensure Tailwind's purge/content configuration doesn't expose unused development styles in production.
Tailwind CSS Security Considerations
Safe Class Application
// Never do this
const userColor = getUserInput(); // Could be malicious
<div className={`bg-${userColor}-500`}>...</div>
// Use a safelist of allowed values
const colorMap = {
red: 'bg-red-500',
blue: 'bg-blue-500',
green: 'bg-green-500',
};
const userColor = getUserInput();
const safeClass = colorMap[userColor] || 'bg-gray-500';
<div className={safeClass}>...</div>
Lovable Content Security Policy
Content-Security-Policy:
default-src 'self';
style-src 'self' 'unsafe-inline'; // Tailwind may need this
script-src 'self';
img-src 'self' data: https:;
font-src 'self' https://fonts.gstatic.com;
Tailwind Production Build
module.exports = {
content: [
'./index.html',
'./src/**/*.{js,ts,jsx,tsx}',
],
// This ensures only used classes are in production
}
Security Checklist
Tailwind Security Checklist
No user input in class name construction
Content config includes all template files
CSP headers configured appropriately
Production build removes unused styles
Can Tailwind classes be a security risk?
Tailwind classes themselves are safe. The risk comes from dynamically constructing class names from untrusted input, which could allow CSS injection attacks.
Alternative Stack Options
Consider these related blueprints for different stack combinations:
- Lovable + shadcn/ui - Tailwind-based component library
- Lovable + Vercel - Deploy with security headers
- Lovable + Netlify - Alternative deployment platform