Vulnerabilidad · Publicado 03/10/2026
El plugin Simple Membership para WordPress (versiones hasta 4.8.3) contiene una vulnerabilidad que permite a atacantes no autenticados modificar datos y acceder a información sensible a través de los endpoints resend-activation y email-activation. La falta de validación de autenticación, nonce y permisos en estas funciones expone a miles de sitios WordPress en LATAM que utilizan este plugin gratuito para gestionar membresías.
The Simple Membership plugin for WordPress is vulnerable to unauthorized modification of data and sensitive information disclosure in versions up to, and including, 4.8.3 via the resend-activation and email-activation endpoints. The endpoints are dispatched from SwpmInitTimeTasks::check_and_do_email_activation() on frontend init with no authentication, nonce, capability, or ownership check, and the recipient address used by SwpmRegistration::send_reg_email() is taken from an attacker-controlled $_POST['email'] parameter (overriding the member's registered address). This makes it possible for unauthenticated attackers to redirect an arbitrary pending member's activation email — and the follow-up 'registration complete' email containing the member's username and plaintext password — to an attacker-chosen address, and to then activate that member's account without their consent.
Score: 7.5/10 — Severidad: HIGH — Estado NIST: Received
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE-862
Publicado en NIST NVD.