QID 150754

Date Published: 2023-12-06

QID 150754: WordPress REST API User Enumeration Vulnerability

WordPress is an open source blogging tool and content management system based on PHP and MySQL.

WordPress REST API username enumeration is a security vulnerability that allows attackers to discover valid usernames on a WordPress site by exploiting the endpoint.

QID Detection Logic:
This QID sends a HTTP GET request to "wp-json/wp/v2/users" or "?rest_route=/wp/v2/users" endpoints and checks the response body to confirm the vulnerability.

Successful exploitation allows an unauthenticated attacker to gain access to the list of users on a WordPress installation that have published atleast one post.

CVSS V3 rated as Medium - 5.3 severity.

CVSS V2 rated as Medium - 5 severity.

Solution

To prevent WordPress REST API username enumeration, use a WordPress plugin like "Stop User Enumeration", disable REST API or implement custom .htaccess rules to block username enumeration requests.

Vendor References

CVEs related to QID 150754

Software Advisories

Advisory ID	Software	Component	Link

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