What the vulnerability does
01Description
The Modal Popup Box – Popup Builder, Show Offers And News in Popup plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.5.2 via deserialization of untrusted input in the awl_modal_popup_box_shortcode function. This makes it possible for authenticated attackers, with contributor-level access and above, to inject a PHP Object. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.
Explanation of Vulnerability in Simple Terms
02Summary
The Modal Popup Box WordPress plugin through version 1.5.2 deserializes untrusted data without validation, allowing authenticated users to execute arbitrary PHP code on the site. An attacker with low-level WordPress access can craft malicious serialized objects to run their own code with full site privileges. This affects confidentiality, integrity, and availability of the entire WordPress installation.
What an attacker can do
03Attacker Capabilities
Run arbitrary PHP code on the site with full WordPress privileges.
Potential impact on your site
04Site Impact
Complete compromise of the WordPress site; attacker can steal data, modify content, create admin accounts, or take the site offline.
Conditions required to exploit
05Prerequisites
Attacker must have a low-level WordPress user account (subscriber or higher).
Key dates
06Disclosure timeline
April 4, 2024
CVE published
April 8, 2026
Record updated
