Unspecified vulnerability in "edit submission handling" for MediaWiki 1.4.x before 1.4.10 and 1.3.x before 1.3.16 allows remote attackers to cause a denial of service (corruption of the previous submission) via a crafted URL.
http://www.novell.com/linux/security/advisories/2005_22_sr.html
http://sourceforge.net/project/shownotes.php?release_id=358163