CVE-2026-54416: Pluck-CMS Pluck CMS

High severity, CVSS 7.2. EPSS: 0.5% chance of exploitation in the next 30 days.

Pluck CMS through 4.7.21 restricts dangerous file uploads in its admin file-management feature using a fixed blacklist in data/inc/files.php ('.php','php3','php4','php5','php6','php7','phtml','.phtm','.pht','.ph3','.ph4','.ph5','.asp','.cgi','.phar'), checked against the last 4-5 characters of the filename.

Affected products

• Pluck-CMS Pluck CMS: up to and including 4.7.21

Published 2026-08-05. Last modified 2026-08-28.