Framework-Specific Security Features

Each major web framework offers specific features for XSS prevention that developers should understand and utilize. React's JSX automatically escapes values in curly braces, preventing most XSS attacks by default. However, developers must be careful with props spreading, href attributes with javascript: URLs, and the dangerouslySetInnerHTML attribute. React also supports Content Security Policy through various libraries that help manage CSP headers dynamically.

Angular provides similar protections with its template system automatically escaping interpolated values. The framework includes a built-in sanitizer for potentially dangerous operations and marks values as trusted only after sanitization. Angular's security documentation explicitly guides developers on avoiding XSS, including warnings about dangerous patterns. The framework's strict mode and ahead-of-time compilation can catch some security issues during build time rather than runtime.

Vue.js automatically escapes interpolated content but requires vigilance with v-html directives and render functions. The framework provides clear documentation on security best practices and warnings in development mode when potentially dangerous operations are detected. Server-side frameworks like Django, Ruby on Rails, and ASP.NET Core also provide automatic escaping in their template engines, but developers must understand when and how these protections apply.