Vulnerabilidad · Publicado 22/08/2026 · Actualizado 23/08/2026
El plugin WS Form LITE (versiones hasta 1.10.80) para WordPress contiene una vulnerabilidad de inyección de objetos PHP (CVE-2026-4703, CVSS 9.8) que permite a atacantes no autenticados inyectar objetos maliciosos a través de la deserialización de datos en envíos de formularios. Este riesgo afecta directamente a miles de sitios WordPress en México y Latinoamérica que utilizan este constructor de formularios, exponiendo datos sensibles de contacto y potencialmente comprometiendo la integridad del servidor.
The WS Form LITE – Drag & Drop Contact Form Builder plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.10.80 via deserialization of untrusted input from form submission meta values. This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present.
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-502
Publicado en NIST NVD.