Stored Cross-Site Scripting (XSS) vulnerability in POSCMS v4.6.2, allows attackers to execute arbitrary code via a crafted payload to /index.php?c=install&m=index&step=2&is_install_db=0.

POSCMS 3.2.18 allows remote attackers to execute arbitrary PHP code via the diy\dayrui\controllers\admin\Syscontroller.php 'add' function because an attacker can control the value of $data['name'] with no restrictions, and this value is written to the FCPATH.$file file.

POSCMS 3.2.10 allows remote attackers to execute arbitrary PHP code via the diy\module\member\controllers\admin\Setting.php 'index' function because an attacker can control the value of $cache['setting']['ucssocfg'] in diy\module\member\models\Member_model.php and write this code into the api/ucsso/config.php file.