What the vulnerability does
01Description
The Advanced Woo Labels plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 2.37. This is due to the use of `call_user_func_array()` with user-controlled callback and parameters in the `get_select_option_values()` AJAX handler without an allowlist of permitted callbacks or a capability check. This makes it possible for authenticated attackers, with Contributor-level access and above, to execute arbitrary PHP functions and operating system commands on the server via the 'callback' parameter.
Explanation of Vulnerability in Simple Terms
02Summary
Advanced Woo Labels for WooCommerce versions 2.36 and earlier contain a code injection vulnerability. An authenticated user with low privileges can inject and execute arbitrary PHP code on the site. This allows complete compromise of the WordPress installation, including data theft, malware installation, and site takeover. Update immediately to a version newer than 2.36.
What an attacker can do
03Attacker Capabilities
Run arbitrary PHP code on the site and take full control of WordPress.
Potential impact on your site
04Site Impact
Complete site compromise: attackers can steal data, install malware, modify content, or lock you out.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege WordPress user account (e.g., contributor or subscriber).
Key dates
06Disclosure timeline
February 25, 2026
CVE published
April 8, 2026
Record updated
