Cross-site scripting vulnerability in Splatt Forum 3.0 allows remote attackers to execute arbitrary script as other users via an [img] tag with a closing quote followed by the script.
http://www.iss.net/security_center/static/9279.php
http://online.securityfocus.com/archive/1/275744
http://archives.neohapsis.com/archives/vulnwatch/2002-q2/0091.html