README

This plugin helps protect your website from two common types of Cross-Site Scripting (XSS) vulnerabilities:

• Reflected XSS: This happens when harmful scripts are hidden in a website's URL. If a user clicks a link with such a script, it can run in their browser, potentially stealing their data or taking control of their system.
• Self-XSS: This occurs when a user's own input on your website is displayed back to them in an unsafe way, allowing malicious scripts to run in their browser.

This plugin provides several layers of protection:

Blocking: When active, the plugin checks URLs for specific characters. If it finds any of these characters in the URL, it redirects the user to prevent a potential XSS attack. You can customize which characters to block or allow.

Encoding: For an extra layer of security, the plugin encodes certain characters found in URL parameters. This stops harmful code from running, even if it's present in the URL. You can also choose to exclude specific parameters from being encoded.

Escaping HTML in $_GET: This plugin automatically makes HTML characters safe within the $_GET variable. This is vital if your website pulls data from URLs and displays it as part of your web page. It helps prevent malicious scripts from being injected through user-provided input.

Important Notes:

• After activating the plugin, thoroughly test your website forms, especially if you use WooCommerce. Make sure the plugin doesn't interfere with your shopping cart and checkout processes.
• We welcome bug reports for this plugin on GitHub: https://github.com/samiahmedsiddiqui/prevent-xss-vulnerability/issues. Please remember that GitHub is for bug reports only, not general support.

By using this plugin and following these recommendations, you can significantly improve your website's defense against XSS attacks.

Installation

You can install this plugin either through your WordPress dashboard or manually via FTP.

From within WordPress

1. Go to 'Plugins > Add New'.
2. Search for Prevent XSS Vulnerability.
3. Click "Activate" for Prevent XSS Vulnerability on your Plugins page.
4. Then, follow the after activation steps below.

Manually (via FTP)

1. Upload the prevent-xss-vulnerability folder to the /wp-content/plugins/ directory.
2. Activate Prevent XSS Vulnerability through the 'Plugins' menu in WordPress.
3. Then, follow the after activation steps below.

After activation

1. Go to the Prevent XSS Vulnerability page in your WordPress Admin Dashboard.
2. Adjust the settings to fit your website's needs.
3. That's it! You're done.

Frequently Asked Questions

Q. Why should I install this plugin?

A. Installing this plugin is the easiest way to protect your site from XSS vulnerabilities.

Q. Does this plugin escape HTML when printing search results?

A. Yes, this plugin escapes HTML in the $_GET variable, which is often used to display data from the URL in HTML. However, if your site heavily relies on $_GET for other functions, you might need to do thorough testing to ensure everything works correctly.

Q. Does this plugin conflict with any other plugins?

A. While we haven't received reports of major conflicts, it's always a good idea to thoroughly test your website after installing any new plugin.