libs\classes\attachment.class.php in PHPCMS 9.6.0 allows remote attackers to upload and execute arbitrary PHP code via a .txt?.php#.jpg URI in the SRC attribute of an IMG element within info[content] JSON data to the index.php?m=member&c=index&a=register URI.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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