Cross-site scripting (XSS) vulnerability in YaBB 1 Gold(SP1.3) and YaBB SE 1.5.1 Final allows remote attackers to inject arbitrary web script via the background:url property in (1) glow or (2) shadow tags.
https://exchange.xforce.ibmcloud.com/vulnerabilities/15488
http://www.yabbforum.com/community/YaBB.pl?board=general%3Baction=display%3Bnum=1093133233
http://www.securityfocus.com/bid/9873
http://securitytracker.com/id?1009427