What the vulnerability does
01Description
The Easy PHP Settings plugin for WordPress is vulnerable to PHP Code Injection in all versions up to, and including, 1.0.4 via the `update_wp_memory_constants()` method. This is due to insufficient input validation on the `wp_memory_limit` and `wp_max_memory_limit` settings before writing them to `wp-config.php`. The `sanitize_text_field()` function used for sanitization does not filter single quotes, allowing an attacker to break out of the string context in a PHP `define()` statement. This makes it possible for authenticated attackers, with Administrator-level access and above, to inject and execute arbitrary PHP code on the server by modifying `wp-config.php`, which is loaded on every page request.
Explanation of Vulnerability in Simple Terms
02Summary
Easy PHP Settings versions 1.0.4 and earlier contain a code injection vulnerability that allows high-privilege users to execute arbitrary PHP code on the site. An attacker with administrative access can inject malicious code through the application's settings interface, gaining full control over the site's functionality and data. This vulnerability requires administrative credentials to exploit.
What an attacker can do
03Attacker Capabilities
Run arbitrary PHP code on the site with full system access.
Potential impact on your site
04Site Impact
A compromised admin account can execute any code, steal data, modify content, or take the site offline.
Conditions required to exploit
05Prerequisites
Attacker must have administrative or high-privilege user account access to the application.
Key dates
06Disclosure timeline
March 7, 2026
CVE published
April 8, 2026
Record updated
