CVE-2018-18573: Oscommerce

High severity, CVSS 7.2. EPSS: 2.6% chance of exploitation in the next 30 days.

osCommerce 2.3.4.1 has an incomplete '.htaccess' for blacklist filtering in the "product" page. Remote authenticated administrators can upload new '.htaccess' files (e.g., omitting .php) and subsequently achieve arbitrary PHP code execution via a /catalog/admin/categories.php?cPath=&action=new_product URI.

Affected products

Published 2019-08-22. Last modified 2026-06-17.