The OOXML Validator validates Office Open XML files (.docx, .docm, .dotm, .dotx, .pptx, .pptm, .potm, .potx, .ppam, .ppsm, .ppsx, .xlsx, .xlsm, .xltm, .xltx, or .xlam ...
Download and view handlers create UrlResource without verifying the file exists or is readable, leading to unclear 200 responses or late I/O errors.