Multiple cross-site request forgery (CSRF) vulnerabilities in the ACL Manager plugin (plugins/acl/ajax.php) in DokuWiki before 2009-12-25c allow remote attackers to hijack the authentication of administrators for requests that modify access control rules, and other unspecified requests, via unknown vectors.

Directory traversal vulnerability in the ACL Manager plugin (plugins/acl/ajax.php) in DokuWiki before 2009-12-25b allows remote attackers to list the contents of arbitrary directories via a .. (dot dot) in the ns parameter.

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.

CRLF injection vulnerability in lib/exe/fetch.php in DokuWiki 2006-03-09e, and possibly earlier, allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via CRLF sequences in the media parameter. NOTE: this issue can be leveraged for XSS attacks.

lib/exec/fetch.php in DokuWiki before 2006-03-09e allows remote attackers to cause a denial of service (CPU consumption) via large w and h parameters, when resizing an image.

lib/exec/fetch.php in DokuWiki before 2006-03-09e, when conf[imconvert] is configured to use ImageMagick, allows remote attackers to execute arbitrary commands via shell metacharacters in the (1) w and (2) h parameters, which are not filtered when invoking convert.