In Gxlcms QY v1.0.0713, Lib\Lib\Action\Admin\DataAction.class.php allows remote attackers to delete any file via directory traversal sequences in the id parameter of an Admin-Data-del request.

In Gxlcms QY v1.0.0713, the update function in Lib\Lib\Action\Admin\TplAction.class.php allows remote attackers to execute arbitrary PHP code by placing this code into a template.

In Gxlcms QY v1.0.0713, the upload function in Lib\Lib\Action\Admin\UploadAction.class.php allows remote attackers to execute arbitrary PHP code by first using an Admin-Admin-Configsave request to change the config[upload_class] value from jpg,gif,png,jpeg to jpg,gif,png,jpeg,php and then making an Admin-Upload-Upload request.

The upsql function in \Lib\Lib\Action\Admin\DataAction.class.php in Gxlcms QY v1.0.0713 allows remote attackers to execute arbitrary SQL statements via the sql parameter. Consequently, an attacker can execute arbitrary PHP code by placing it after a <?php substring, and then using INTO OUTFILE with a .php filename.

Gxlcms uses an unsafe character-replacement approach in an attempt to restrict access, which allows remote attackers to read arbitrary files via modified pathnames in the s parameter to index.php, related to Lib/Admin/Action/TplAction.class.php and Lib/Admin/Common/function.php.