What the vulnerability does
01Description
The tagDiv Composer plugin for WordPress is vulnerable to PHP Object Instantiation in all versions up to, and including, 5.3 via module parameter. This makes it possible for unauthenticated attackers to Instantiate 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.
Explanation of Vulnerability in Simple Terms
02Summary
tagDiv Composer versions 5.3 and earlier contain a code injection vulnerability that allows unauthenticated attackers to run arbitrary PHP code on the site without user interaction. The vulnerability stems from improper handling of user input, enabling remote code execution. All versions up to 5.3 are affected.
What an attacker can do
03Attacker Capabilities
Run arbitrary PHP code on the site and take complete control of it.
Potential impact on your site
04Site Impact
Complete site compromise: attackers can steal data, modify content, install malware, or take the site offline.
Conditions required to exploit
05Prerequisites
Network access only; no authentication or user interaction required.
Key dates
06Disclosure timeline
April 4, 2025
CVE published
April 8, 2026
Record updated
