CVE-2026-5957: Roxnor Emailkit – Email Customizer For Woocommerce & Wp

Medium severity, CVSS 6.5. EPSS: 0.7% chance of exploitation in the next 30 days.

The EmailKit plugin for WordPress is vulnerable to Arbitrary File Read in all versions up to and including 1.6.5. This is due to a flawed path traversal validation in the create_template() method of the CheckForm class, where realpath() is called on the allowed base directory (wp-content/uploads/emailkit/templates/) which may not exist, causing it to return false. In PHP 8.x, strpos($real_path, false) implicitly converts false to an empty string, and strpos() with an empty needle always returns 0, causing the check strpos(...) !== 0 to evaluate to false and bypassing the path validation entirely. This makes it possible for authenticated attackers, with Author-level access and above, to read arbitrary files from the server, including sensitive files such as wp-config.php, by supplying an absolute path to the emailkit-editor-template REST API parameter.

Affected products

• Roxnor Emailkit – Email Customizer For Woocommerce & Wp: up to and including 1.6.5

Published 2026-05-05. Last modified 2026-06-17.