M4 PDF plugin for Prestashop sites, in its 3.2.3 version and before, is vulnerable to an arbitrary HTML Document crafting vulnerability. The resource /m4pdf/pdf.php uses templates to dynamically create documents. In the case that the template does not exist, the application will return a fixed document with a message in mpdf format. An attacker could exploit this vulnerability by inputting a valid HTML/CSS document as the value of the parameter.

M4 PDF plugin for Prestashop sites, in its 3.2.3 version and before, is vulnerable to a directory traversal vulnerability. The “f” parameter is not properly checked in the resource /m4pdf/pdf.php, returning any file given its relative path. An attacker that exploits this vulnerability could download /etc/passwd from the server if the file exists.