Directory traversal vulnerability in kgcall.php in KGB 1.87 allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the engine parameter, as demonstrated by uploading a file containing PHP code with an image/jpeg content type, and then referencing this file through the engine parameter.

Directory traversal vulnerability in sesskglogadmin.php in KGB 1.9 and earlier allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the skinnn parameter, as demonstrated by invoking kg.php with a postek parameter containing PHP code, which is injected into a file in the kg directory, and then included by sesskglogadmin.php.