The Hosted Transparent Decision Service in the Rule Execution Server in IBM WebSphere ILOG JRules 7.1 before MP1 FP5 IF43; WebSphere Operational Decision Management 7.5 before FP3 IF41; and Operational Decision Manager 8.0 before MP1 FP2 IF34, 8.5 before MP1 FP1 IF43, and 8.6 before IF8 allows remote attackers to read arbitrary files via an XML external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue.