---
title: Vulnerabilities
canonical: https://wpsecurityninja.com/docs/vulnerabilities/
---
The vulnerability scanner (Free and Pro) checks plugins, themes, and WordPress core against known vulnerabilities.

*   ### [How the vulnerability scanner works](https://wpsecurityninja.com/docs/vulnerabilities/scanner/)
*   ### [How to use the vulnerability scanner](https://wpsecurityninja.com/docs/vulnerabilities/how-to-use-the-vulnerability-scanner/)
*   ### [Email alerts for detected vulnerabilities](https://wpsecurityninja.com/docs/vulnerabilities/email-alerts-for-detected-vulnerabilities/)
*   ### [Dangers of outdated plugins](https://wpsecurityninja.com/docs/vulnerabilities/outdated-plugins/)
*   ### [What does “plugin closed” mean?](https://wpsecurityninja.com/docs/vulnerabilities/plugin-closed/)
*   ### [What is the outdated.dat file?](https://wpsecurityninja.com/docs/vulnerabilities/what-is-the-outdated-dat-file/)
*   ### [Problems with the vulnerability scanner](https://wpsecurityninja.com/docs/vulnerabilities/problems-with-the-vulnerability-scanner/)