Crítica

Meta Box AIO <= 3.11.0 And Standalone Plugin Extensions - Unauthenticated Privilege Escalation to Administrator to 'rwmb_frontend_field_object_id' Parameter

  • Publicada: 21.09.2026
  • Actualizado: 11.10.2026 10:22

The Meta Box AIO plugin for WordPress is vulnerable to Privilege Escalation to Administrator in versions up to, and including, 3.11.0. This is due to a chained flaw: the populate_via_query_string() function in the mb-frontend-submission component unconditionally overrides the form's target object_id from the GET parameter 'rwmb_frontend_field_object_id' without any authorization check, and Form::process() lacks the user_can_edit() check present in render(), allowing unauthenticated attackers to overwrite the post_content of any page with an arbitrary shortcode via wp_update_post(); the mb-user-profile component then directly trusts the 'role' and 'auto_login' shortcode attributes in the injected [mb_user_profile_register] shortcode with no role validation. This makes it possible for unauthenticated attackers to elevate their privileges to Administrator. The standalone plugins Meta Box Frontend Submission (in versions up to 4.6.0) and Meta Box User Profile (versions up to 2.5.16) are also affected.

Software afectado

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PlataformaPaqueteVersiones vulnerablesCorregida en
Plugin de WordPress Meta Box Frontend Submission <= 4.6.0 4.6.1
Plugin de WordPress Meta Box User Profile <= 2.5.16 2.6.0
Plugin de WordPress Meta Box AIO <= 3.11.0 3.12.0

Referencias

Puntuación CVSS 9.8/10
Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Debilidad (CWE)
CWE-269
Plataforma
WordPress
Paquete
Meta Box Frontend Submission, Meta Box User Profile, Meta Box AIO
Publicada
21.09.2026
Actualizado
11.10.2026 10:22

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