BEA WebLogic Server and WebLogic Express 8.1 SP4 and earlier, 7.0 SP6 and earlier, and WebLogic Server 6.1 SP7 and earlier allow remote attackers to cause a denial of service (memory exhaustion) via crafted non-canonicalized XML documents.
https://exchange.xforce.ibmcloud.com/vulnerabilities/25348
http://www.vupen.com/english/advisories/2006/1021
http://www.securityfocus.com/bid/17167
http://securitytracker.com/id?1015790