The invokeNextValve function in identity/federation/bindings/tomcat/idp/AbstractIDPValve.java in PicketLink before 2.8.0.Beta1 does not properly check role based authorization, which allows remote authenticated users to gain access to restricted application resources via a (1) direct request or (2) request through an SP initiated flow.
https://issues.jboss.org/browse/PLINK-708
https://github.com/picketlink/picketlink-bindings/pull/124
https://bugzilla.redhat.com/show_bug.cgi?id=1216123
http://rhn.redhat.com/errata/RHSA-2015-1673.html
http://rhn.redhat.com/errata/RHSA-2015-1672.html
http://rhn.redhat.com/errata/RHSA-2015-1671.html