wordpress-security-hardening

What problem does it solve?

WordPress security requires defense-in-depth: sanitize ALL input, escape ALL output, verify nonces for state changes, check capabilities for privileged operations, and use prepared statements for database queries. This guide helps developers implement consistent security controls across themes and plugins, reducing the risk of common vulnerabilities.

Core Features & Use Cases

• Sanitization & Validation: Educates on proper sanitization of inputs (POST/GET/FILES), and validation strategies to prevent harmful data from entering the system.
• Output Escaping: Covers escaping HTML, attributes, URLs, and JavaScript contexts to prevent XSS.
• Security Patterns: Provides reusable patterns for nonce verification, capability checks, and safe database queries using prepared statements.
• Use Case: A plugin developer adds input sanitization, nonce checks, and a secure SQL query to prevent SQL injection in a custom REST endpoint.

Quick Start

Implement a nonce-verified, sanitized input flow in a WordPress theme or plugin and validate it with a basic security test.