Vue XSS Guide: Examples and Prevention

Web security is fundamentally built on trust, and safeguarding websites from vulnerabilities such as cross-site scripting (XSS) attacks is crucial to maintaining this trust. XSS vulnerabilities occur when malicious scripts are injected into trusted websites, exploiting the browser's trust to access sensitive user data like cookies and local storage. The document explores an example of an XSS vulnerability in a Vue application, demonstrating how attackers can exploit HTML parsing to inject harmful scripts. To mitigate such vulnerabilities, it suggests disabling HTML parsing, using an HTML sanitizer like the sanitize-html package, or implementing a Content Security Policy (CSP) as potential solutions. These measures aim to protect applications while ensuring that users can safely engage with user-generated content on the web. The text underscores the importance of proactive security measures to stay ahead of potential attacks and safeguard user data, emphasizing the role of tools like StackHawk in enhancing web security.