A typo in the administrator permission check in the ACL Manager plugin (plugins/acl/ajax.php) in DokuWiki before 2009-12-25b allows remote attackers to gain privileges and access closed wikis by editing current ACL statements, as demonstrated in the wild in January 2010.
bugs.splitbrain.org/index.php?do=details&task_id=1847
lists.fedoraproject.org/pipermail/package-announce/2010-February/034729.html
lists.fedoraproject.org/pipermail/package-announce/2010-February/034831.html
osvdb.org/61710
secunia.com/advisories/38183
security.gentoo.org/glsa/glsa-201301-07.xml
www.debian.org/security/2010/dsa-1976
www.exploit-db.com/exploits/11141
www.securityfocus.com/bid/37820
www.splitbrain.org/blog/2010-01/17-dokuwiki-security
www.vupen.com/english/advisories/2010/0150
exchange.xforce.ibmcloud.com/vulnerabilities/55661