Applications that use Hibernate mapped to use cglib as its byte code provider will fail to deploy due to java.lang.SecurityException,

An example of the error message is:

Deployment "persistence.unit:unitName=lobtest.ear/lobtest-ejb-1.0-SNAPSHOT.jar#lobtest-jpa-jndi" is in error due to the following reason(s): java.lang.SecurityException: class "com.redhat.gss.lobtest.jpa.Item$$EnhancerByCGLIB$$defd1a7f"'s signer information does not match signer information of other classes in the same package

This happens because cglib.jar in EAP 5 is signed and the cglib-instrumented proxy uses the same signer information as cglib.jar, instead of the signer information for the applications target class.