🔐 WordPress Security Hardening Plugin

A lightweight WordPress plugin focused on modern security hardening best practices without unnecessary bloat.

🚀 Features

• ✅ Generic login error messages (prevent user enumeration)
• ✅ Generic password reset responses
• ✅ HTTP Strict Transport Security (HSTS)
• ✅ CORS configuration
• ✅ Subresource Integrity (SRI) for scripts and styles
• ✅ XML-RPC disabling
• ✅ Comment sanitization (anti-XSS)
• ✅ Content Security Policy (CSP)
• ✅ Custom port number support (development environments, custom setups)

⚙️ Configuration

This plugin is designed to be hassle free, however if you like to add domains that are not detected in the content security policy. Please use the following filter:

add_filter(
    'WpSecurity/Csp',
    function ($domains) {
        if(!isset($domains['connect-src'])) {
            $domains['connect-src'] = [];
        }
        $domains['connect-src'][] = 'https://*.domain.com';
        $domains['connect-src'][] = 'https://*.domain.net';
        return $domains;
    }
);

🔧 Custom Port Support

The plugin fully supports WordPress installations running on custom ports (e.g., localhost:8080 for development). All security features work correctly with custom ports:

• ✅ CSP headers include port numbers in domain policies
• ✅ CORS headers respect the full URL with port
• ✅ SRI verification works with local assets on custom ports
• ✅ All URL parsing and domain matching handles ports correctly

No additional configuration is needed - the plugin automatically detects and handles custom ports from your WordPress site URL.

For detailed information about custom port support, see CUSTOM_PORTS.md.