Security & Sanitization in Angular
From the Angular cheat sheet · Security · verified Jul 2026
Security & Sanitization
XSS protection and content sanitization
typescript
// Angular automatically sanitizes values
@Component({
template: \`
<!-- Automatically sanitized -->
<div [innerHTML]="userContent"></div>
<!-- Text interpolation is always safe -->
<p>{{ userInput }}</p>
\`
})
export class SafeComponent {
userContent = '<script>alert("XSS")</script>'; // Script tags removed
userInput = '<img src=x onerror="alert(1)">'; // Displayed as text
}💡 Angular automatically sanitizes innerHTML to prevent XSS
⚡ Use DomSanitizer.bypassSecurityTrust* only for trusted content
📌 Always validate and sanitize user input on both client and server
🔥 Implement CSP headers to prevent unauthorized script execution