Vulnerabilidad · Publicado 22/08/2026
El plugin Mailgun for WordPress versiones hasta 2.2.0 contiene una vulnerabilidad de Server-Side Request Forgery (SSRF) por validación insuficiente en la función add_list(). Atacantes no autenticados pueden explotar el path traversal mediante claves controladas en $_POST['addresses'] para acceder a recursos internos del servidor. Afecta directamente a sitios WordPress en México y LATAM que utilizan este plugin para gestión de correos transaccionales.
The Mailgun for WordPress plugin for WordPress is vulnerable to Server-Side Request Forgery (SSRF) via path traversal in versions up to and including 2.2.0. This is due to insufficient input validation in the add_list() function, which accepts user-controlled array keys from $_POST['addresses'], passes them through sanitize_text_field(). This makes it possible for unauthenticated attackers to make authenticated POST requests to any Mailgun API endpoint using the WordPress site's API key, including creating inbound email-forwarding routes that can intercept password reset emails, leading to administrator account takeover.
Score: 9.8/10 — Severidad: CRITICAL — Estado NIST: Received
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-918
Publicado en NIST NVD.