Vulnerability Fixation
User Enumeration In WordPress

User Enumeration In WordPress

WordPress powers over 40% of the web, making it a lucrative target for attackers. User enumeration in WordPress is a potential vulnerability that attackers can exploit to gain insights into a website’s user accounts.

While it may seem harmless at first glance, it can serve as a precursor to more severe attacks, such as brute-force login attempts.

Vulnerability

WordPress may reveal usernames through URLs like /?author=1, REST API endpoints (/wp-json/wp/v2/users), or different login error messages, allowing attackers to identify valid accounts.

Impact

  • Brute-Force Attacks: Enables easier password guessing.
  • Phishing Attacks: Exposed usernames can be used in social engineering.
  • Reconnaissance: Reveals admin or privileged users for targeted attacks.
Solution

  • Disable author archive access in functions.php.
  • Restrict REST API user endpoints.
  • Use generic login error messages.
  • Apply rate limiting or CAPTCHA.

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