Jetty before 4.2.27, 5.1 before 5.1.12, 6.0 before 6.0.2, and 6.1 before 6.1.0pre3 generates predictable session identifiers using java.util.random, which makes it easier for remote attackers to guess a session identifier through brute force attacks, bypass authentication requirements, and possibly conduct cross-site request forgery attacks.
Unspecified vulnerability in Jetty HTTP Server, as used in (1) IBM Trading Partner Interchange before 4.2.4, (2) CA Unicenter Web Services Distributed Management (WSDM) before 3.11, and possibly other products, allows remote attackers to read arbitrary files via a .. (dot dot) in the URL.