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The 10 Most Common WordPress Vulnerabilities and How to Fix Them
Published on 1/10/20257 min read
Why WordPress is a Frequent Target
WordPress powers over 40% of websites worldwide, making it the most used CMS and consequently the most attacked. Most vulnerabilities are not in the WordPress core but in third-party plugins and themes.
The 10 Most Common Vulnerabilities
1. Outdated Plugins
Outdated plugins are the number one cause of WordPress compromises. Many abandoned plugins contain known unpatched vulnerabilities.
2. SQL Injection in Plugins
Plugins with non-parameterized forms and queries allow malicious SQL code injection.
3. Cross-Site Scripting (XSS)
Unsanitized inputs in comments, forms, and URL parameters allow execution of malicious JavaScript.
4. Exposed wp-config.php
If the web server is misconfigured, the configuration file with DB credentials can be accessible.
5. XML-RPC Enabled
The XML-RPC interface is often used for amplified brute force attacks and DDoS.
How to Protect Your WordPress
- Update WordPress, plugins and themes regularly
- Remove unused plugins and themes
- Run a WordPress Security Scan with SecureScan
- Configure correct file permissions
- Disable XML-RPC if not needed
- Implement rate limiting on the login page