doku.php in DokuWiki, as used in Fedora 16, 17, and 18, when certain PHP error levels are set, allows remote attackers to obtain sensitive information via the prefix parameter, which reveals the installation path in an error message.
https://bugzilla.redhat.com/show_bug.cgi?id=835145
http://www.openwall.com/lists/oss-security/2012/06/25/2
http://www.openwall.com/lists/oss-security/2012/06/24/2
http://www.mandriva.com/security/advisories?name=MDVSA-2013:073
http://www.freelists.org/post/dokuwiki/Fwd-DokuWiki-Full-path-disclosure
http://lists.fedoraproject.org/pipermail/package-announce/2012-October/090938.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-October/090899.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-October/090755.html