Jboss EAP Vulnerability - CVE-2012-4529
The org.apache.catalina.connector.Response.encodeURL method in Red Hat JBoss Web 7.1.x and earlier when the tracking mode is set to COOKIE sends the jsessionid in the URL of the first response of a session which allows remote attackers to obtain the session id (1) via a man-in-the-middle attack or (2) by reading a log.