CVE-2017-9428: Bigtreecms Bigtree CMS

High severity, CVSS 7.5. EPSS: 2% chance of exploitation in the next 30 days.

A directory traversal vulnerability exists in core\admin\ajax\developer\extensions\file-browser.php in BigTree CMS through 4.2.18 on Windows, allowing attackers to read arbitrary files via ..\ sequences in the directory parameter.

Affected products

• Bigtreecms Bigtree CMS: up to and including 4.2.18

Published 2017-06-04. Last modified 2026-06-17.