Unrestricted file upload vulnerability in plog-admin/plog-upload.php in Plogger 1.0 RC1 and earlier allows remote authenticated users to execute arbitrary code by uploading a ZIP file that contains a PHP file and a non-zero length PNG file, then accessing the PHP file via a direct request to it in plog-content/uploads/archive/.
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.