What the vulnerability does
01Description
The s2Member Pro plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 241216 via deserialization of untrusted input from the 's2member_pro_remote_op' vulnerable parameter. This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable software. 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
s2Member Pro versions up to 241216 contain a deserialization vulnerability that allows unauthenticated attackers to run arbitrary code on affected sites. The vulnerability exists in how the plugin processes untrusted serialized data without proper validation. No user interaction is required; an attacker can exploit this remotely over the network. Sites running affected versions should update immediately.
What an attacker can do
03Attacker Capabilities
Run arbitrary code on the site, read sensitive data, modify content, or disable the site entirely.
Potential impact on your site
04Site Impact
Complete compromise of the WordPress site and server; attacker gains full control.
Conditions required to exploit
05Prerequisites
Network access only; no authentication or user interaction required.
Key dates
06Disclosure timeline
February 15, 2025
CVE published
April 8, 2026
Record updated
