CMS Made Simple (CMSMS) 2.2.7 contains a privilege escalation vulnerability from ordinary user to admin user by arranging for the eff_uid v…

CMS Made Simple (CMSMS) 2.2.7 contains a privilege escalation vulnerability from ordinary user to admin user by arranging for the eff_uid value within $_COOKIE[$this->_loginkey] to equal 1, because files in the tmp/ directory are accessible through HTTP requests. NOTE: this vulnerability exists because of an incorrect fix for CVE-2018-10084.