IBM App Connect Enterprise is an operating system from International Business Machines (IBM), U.S.A. IBM Integration Bus (IBM WebSphere Message Broker) is an enterprise service bus (ESB) product from International Business Machines (IBM), U.S.A… The product provides connectivity and common data transformations for Service Oriented Architecture (SOA) environments and non-SOA environments. An information disclosure vulnerability exists in IBM App Connect Enterprise and IBM Integration Bus for z/OS, which can be exploited by an attacker to read sensitive information in log or trace files.