QR/demoapp/qr_image.php in Asial JpGraph Professional through 4.2.6-pro allows remote attackers to execute arbitrary code via a PHP payload in the data parameter in conjunction with a .php file name in the filename parameter. This occurs because an unnecessary QR/demoapp folder.is shipped with the product.
The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.