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.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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