CVE 2006-5099
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.
See the 
CVE page on Mitre.org
for more details.
