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.

In \lib\admin\action\dataaction.class.php in Gxlcms v1.1, SQL Injection exists via the $filename parameter.

In Gxlcms QY v1.0.0713, Lib\Lib\Action\Home\HitsAction.class.php allows remote attackers to read data from a database by embedding a FROM clause in a query string within a Home-Hits request, as demonstrated hy sid=user,password%20from%20mysql.user%23.

In Gxlcms QY v1.0.0713, Lib\Lib\Action\Admin\TplAction.class.php allows remote attackers to read any file via a modified pathname in an Admin-Tpl request, as demonstrated by use of '|' instead of '/' as a directory separator, in conjunction with a ".." sequence.

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 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.

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.

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.

In \lib\admin\action\dataaction.class.php in Gxlcms v2.0, SQL Injection exists via the ids[] parameter.

In \lib\admin\action\dataaction.class.php in Gxlcms v2.0, the database backup filename generation uses mt_rand() unsafely, resulting in predictable database backup file locations.

Gxlcms 1.0 has XSS via the PATH_INFO to gx/lib/ThinkPHP/Tpl/ThinkException.tpl.php.

Gxlcms 2.0 before bug fix 20180915 has Directory Traversal exploitable by an administrator.

Gxlcms 2.0 before bug fix 20180915 has SQL Injection exploitable by an administrator.

In Gxlcms 2.0, a news/index.php?s=Admin-Admin-Insert CSRF attack can add an administrator account.

The add function in www/Lib/Lib/Action/Admin/TplAction.class.php in Gxlcms v1.1.4 allows remote attackers to read arbitrary files via a crafted index.php?s=Admin-Tpl-ADD-id request, related to Lib/Common/Admin/function.php.