CVE-2026-54416 [HIGH] – Pluck CMS through 4.7.21 restricts dangerous file uploads in its admin file-management fea

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.