In Vtiger 7.x before 7.2.0, the My Preferences saving functionality allows a user without administrative privileges to change his own role by adding roleid=H2 to a POST request.Referenceshttps://code.vtiger.com/vtiger/vtigercrm/issues/1126http://lists.vtigercrm.com/pipermail/vtigercrm-developers/2019-April/037964.html