What the vulnerability does
01Description
The ProfileGrid – User Profiles, Groups and Communities plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 5.9.4.5 via deserialization of untrusted input in the get_user_meta_fields_html function. This makes it possible for authenticated attackers, with Subscriber-level access and above, 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.
Explanation of Vulnerability in Simple Terms
02Summary
ProfileGrid versions up to 5.9.4.5 contain a deserialization vulnerability that allows authenticated users to execute arbitrary code on the site. An attacker with a low-privilege account can craft malicious serialized data to trigger code execution with full site access. This affects confidentiality, integrity, and availability of the WordPress installation.
What an attacker can do
03Attacker Capabilities
Run their own code on the site with full administrative privileges.
Potential impact on your site
04Site Impact
Complete site compromise: data theft, malware injection, user account takeover, and site defacement.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege user account (e.g., subscriber or contributor role).
Key dates
06Disclosure timeline
March 22, 2025
CVE published
April 8, 2026
Record updated
