Vulnerabilities in Web Applications Due to Cross-Site Scripting (XSS)

Applications that integrate user-submitted data into browser pages without proper validation or escaping are vulnerable to cross-site scripting (XSS) flaws. These vulnerabilities allow the injection of malicious scripts into web pages viewed by other users, which can lead to the theft of cookies, content manipulation, and other unauthorized actions. The impacts include compromising user security and loss of data confidentiality.