Prevent XSS Vulnerability

This plugin provides multiple layers of defense to safeguard your website against two common and dangerous types of Cross-Site Scripting (XSS) vulnerabilities:

• Reflected XSS: Malicious scripts injected into website URLs can be executed in users’ browsers, potentially leading to data theft or system compromise. Our plugin actively scans URLs for suspicious parameters and redirects users to prevent these attacks.
• Self-XSS: When a user’s own input is reflected back to them insecurely, it can be exploited by malicious scripts. This plugin helps prevent Self-XSS by encoding specific characters and escaping HTML.

Here’s how our plugin protects your website:

• Blocking: The plugin scans URLs for potentially harmful parameters (including ( ) < > [ ] { } |). If any of these are detected, the user is redirected, preventing the XSS attack. You can customize the blocked parameter list to accommodate legitimate URL structures.
• Encoding: Key characters within URL parameters are encoded to prevent malicious code from being executed, even if it bypasses the blocking mechanism. The encoded characters include ! " ' ( ) * < > \ ^ [ ] { } |`. You can also customize the encoded parameter list.
• HTML Escaping in $_GET: The plugin automatically escapes HTML characters within the $_GET variable. This crucial step prevents malicious scripts from being injected through user-supplied URL data.

By implementing this plugin and following best practices, you can significantly strengthen your website’s security posture and protect it from the ever-present threat of XSS attacks.