Multiple unspecified vulnerabilities in IBM WebSphere Application Server before 6.1.0.1 have unspecified impact and attack vectors involving (1) "SOAP requests and responses", (2) mbean, (3) ThreadIdentitySupport, and possibly others.
IBM WebSphere Application Server 3.02 through 3.53 uses predictable session IDs for cookies, which allows remote attackers to gain privileges of WebSphere users via brute force guessing.