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CVSS 8.1 · HIGH

CVE-2026-7647

The Profile Builder Pro plugin for WordPress is vulnerable to PHP Object Injection in all versions up to and including 3.14.5. This is due to the use of PHP's maybe_unserialize() function on the attacker-controlled 'args' POST parameter within the wppb_request_users_pins_action_callback() AJAX handler, which lacked any nonce verification, type checking, or input validation before deserialization. Because the handler was registered with both wp_ajax_ and wp_ajax_nopriv_ hooks, it was reachable by completely unauthenticated users. This makes it possible for unauthenticated attackers to inject arbitrary PHP objects into application memory.

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Análisis

Profile Builder Pro is a widely used commercial WordPress plugin for user management. The vulnerability is an unauthenticated PHP Object Injection via an AJAX handler, allowing remote attackers to potentially achieve RCE on a broad range of sites without credentials.

Severidad

Puntaje: 8.1(HIGH)
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
AV: NETWORK
AC: HIGH
PR: NONE
UI: NONE
S: UNCHANGED
C: HIGH
I: HIGH
A: HIGH
Tipo de falla (CWE): CWE-502

EPSS

Probabilidad de explotación (próx. 30 días): 0.0001 (0.0%)
Percentil: 1.2%
EPSS: 2026-05-06

Descripción técnica

The Profile Builder Pro plugin for WordPress is vulnerable to PHP Object Injection in all versions up to and including 3.14.5. This is due to the use of PHP's maybe_unserialize() function on the attacker-controlled 'args' POST parameter within the wppb_request_users_pins_action_callback() AJAX handler, which lacked any nonce verification, type checking, or input validation before deserialization. Because the handler was registered with both wp_ajax_ and wp_ajax_nopriv_ hooks, it was reachable by completely unauthenticated users. This makes it possible for unauthenticated attackers to inject arbitrary PHP objects into application memory.

Publicada: 2/5/2026, 6:16:04
Última modificación: 5/5/2026, 19:15:59

Referencias

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