What is Cross-Site Scripting (XSS)?

XSS is a web security vulnerability that allows attackers to inject malicious scripts into web pages viewed by other users, potentially stealing cookies, session tokens, or redirecting users.

What are the types of XSS attacks?

The three main types are Reflected XSS (payload in the URL), Stored XSS (payload saved in the database), and DOM-based XSS (payload manipulates the page DOM without server interaction).

How can I prevent XSS in my web application?

Prevent XSS by implementing output encoding, using Content Security Policy headers, validating user input, and using frameworks that auto-escape HTML by default.

Is XSS still a common vulnerability?

Yes, XSS remains one of the most common web vulnerabilities. It consistently ranks in the OWASP Top 10 and affects thousands of websites globally.

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