Cross-Site Scripting (XSS)

Cross-Site Scripting (XSS) is a web security vulnerability that allows attackers to inject malicious scripts into websites viewed by other users. When a user visits a compromised site, the injected script runs in their browser, potentially stealing personal information, such as login credentials or cookies. XSS exploits weaknesses in web applications that fail to properly validate or sanitize user input. It can occur in various forms, including reflected, stored, and DOM-based XSS, making it important for developers to implement robust security measures to protect users from such attacks.