From http://wikipedia.sourceforge.net/: 1.3.9 released 2004-12-12 New stable release mediawiki-1.3.9.tar.gz MediaWiki 1.3.9 is a security and bug fix release. A flaw in upload handling has been found which may allow upload and execution of arbitrary scripts with the permissions of the web server. Only wikis that have enabled uploads and have a vulnerable Apache configuration will be affected, but to be safe all wikis should upgrade. Wikis with uploads available should either disable uploads or upgrade to 1.3.9 immediately; if other files are customized and require merging changes, includes/SpecialUpload.php may be replaced individually to add the fix. Reproducible: Always Steps to Reproduce:
Sorry, it is, in fact, in portage, even as stable.