The package WWV_FLOW_ITEM_HELP in Oracle APEX contains a cross site scripting vulnerability.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/51379/Oracle-APEX_WWV_FLOW_ITEM_HELP.txt
Source: https://packetstormsecurity.com/files/51379/Oracle-APEX_WWV_FLOW_ITEM_HELP.txt.html