pdfforge PDF Architect XLS File Insufficient UI Warning Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of pdfforge PDF Architect. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the processing of XLS files. The issue results from allowing the execution of dangerous script without user warning. An attacker can leverage this vulnerability to execute code in the context of the current user. Was ZDI-CAN-27502.