CVE-2017-9441: Bigtreecms Bigtree CMS

Low severity, CVSS 2.7. EPSS: 0.6% chance of exploitation in the next 30 days.

Multiple cross-site scripting (XSS) vulnerabilities in BigTree CMS through 4.2.18 allow remote authenticated users to inject arbitrary web script or HTML by uploading a crafted package, triggering mishandling of the (1) title or (2) version or (3) author_name parameter in manifest.json. This issue exists in core\admin\modules\developer\extensions\install\unpack.php and core\admin\modules\developer\packages\install\unpack.php. NOTE: the vendor states "You must implicitly trust any package or extension you install as they all have the ability to write PHP files.

Affected products

• Bigtreecms Bigtree CMS: up to and including 4.2.18

Published 2017-06-05. Last modified 2026-06-17.