What the vulnerability does
01Description
The Extra Checkout Options (addon for Extra Product Options & Add-Ons for WooCommerce) plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 2.3.2. This is due to missing authorization and nonce validation in the eco_save_settings() function, which allows low-privileged authenticated users to modify the tc_eco_custom_file_types upload allowlist setting, combined with insufficient authorization on the wc_eco_upload_file AJAX action. This makes it possible for authenticated attackers, with Subscriber-level access and above, to allow PHP uploads, upload a PHP file using the frontend upload nonce exposed on cart and checkout pages, and achieve remote code execution. NOTE: This vulnerability was partially fixed in version 2.3.2.
Explanation of Vulnerability in Simple Terms
02Summary
The Extra Checkout Options addon for the Extra Product Options plugin contains an unrestricted file upload vulnerability. An authenticated user with low privileges can upload files of dangerous types to the server. This can lead to remote code execution, allowing an attacker to run their own code on the site, read sensitive data, or modify site content.
What an attacker can do
03Attacker Capabilities
Upload and execute malicious files on the server to run their own code on the site.
Potential impact on your site
04Site Impact
An attacker with a low-privilege account can compromise the entire site by uploading and executing malicious code.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege user account (e.g., customer or contributor role) on the site.
Key dates
06Disclosure timeline
July 29, 2026
CVE published
