Directory traversal vulnerability in edituser.php in ImpressCMS 1.2.x before 1.2.7 Final and 1.3.x before 1.3.1 Final allows remote authenticated users to include and execute arbitrary local files via a .. (dot dot) in the icmsConfigPlugins[sanitizer_plugins][] parameter.
https://www.htbridge.com/advisory/HTB23064
https://exchange.xforce.ibmcloud.com/vulnerabilities/72146
http://www.securityfocus.com/bid/51268
http://secunia.com/advisories/47448
http://community.impresscms.org/modules/smartsection/item.php?itemid=579