aelsantex runcommand 2014-04-01, a plugin for DokuWiki, allows unauthenticated attackers to execute arbitrary system commands via lib/plugins/runcommand/postaction.php.
https://www.dokuwiki.org/plugin:runcommand
https://github.com/aelsantex/runcommand
https://gist.github.com/NtustLin/f64528002e4f61874045799127dc49a4