The remote web server contains an application that is affected by multiple remote code execution vulnerabilities.
According to its version number, the instance of MediaWiki running on the remote host is affected by the following remote code execution vulnerabilities : - A user-input validation error exists during thumbnail generation in the 'thumb.php' script that allows the execution of arbitrary shell commands via a specially crafted DjVu file. - A user-input validation error exists in the 'pdfhandler_body.php' script used by the PdfHandler extension that allows the execution of arbitrary shell commands via a specially crafted PDF file. Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number. Also note that the affected features are not enabled by default.
Upgrade to MediaWiki version 1.19.11 / 1.21.5 / 1.22.2 or later.