Vulnerabilidad · Publicado 23/08/2026
El plugin Security Hardener para WordPress contiene una vulnerabilidad de autorización faltante (CVE-2026-16149, CVSS 8.8) en todas las versiones hasta la 2.4.4. La función de protección contra enumeración de usuarios, habilitada por defecto, modifica incorrectamente los permisos en los endpoints /wp/v2/users y /wp/v2/users/, permitiendo acceso no autorizado a información sensible. Este riesgo afecta directamente a sitios de e-commerce, portales corporativos y aplicaciones con datos altas en LATAM que dependen de esta funcionalidad.
The Security Hardener plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 2.4.4. The vulnerability exists because the plugin's user-enumeration protection, which is enabled by default, hooks the rest_endpoints filter via secure_user_endpoints() and overwrites every registered handler's permission_callback on both the /wp/v2/users and /wp/v2/users/(?P<id>[\d]+) routes — including POST, PUT, PATCH, and DELETE handlers — with a bare closure that returns only is_user_logged_in(), completely stripping WordPress Core's original capability checks such as create_users, promote_user, edit_users, and delete_users that WP_REST_Users_Controller normally enforces. This makes it possible for authenticated attackers with Subscriber-level access and above to create new Administrator accounts by sending POST request to /wp/v2/users with administrator role, or to reset an existing Administrator's password by issuing a PUT/POST request to /wp/v2/users/<id>. Because the block_user_enum option defaults to enabled, no special plugin configuration is required — the overwrite is active on every request as soon as the plugin is installed.
Score: 8.8/10 — Severidad: HIGH — Estado NIST: Received
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-269
Publicado en NIST NVD.