Discuz x2 source/function/function_connect.php leakage of the server's physical path-vulnerability warning-the black bar safety net

Affected version: Discuz x2 vulnerability description: source/function/functionconnect.php The file header is not added: if! defined‘INDISCUZ’ exit‘Access Denied’; And at the head of the pack The letter the other file: requireonce libfile‘function/cloud’; reference...