Given a particular applicationName and JSessionID in ColdFusion, the following code will return a dump of the user's session.
<cfparam name="url.applicationName" default="" type="string" /><cfparam name="url.jsessionID" default="" type="string" /><cftry><cfscript>sessionTracker = createObject("java", "coldfusion.runtime.SessionTracker");appSessions = sessionTracker.getSessionCollection(javaCast("string", url.applicationName));sessionID = url.applicationName & "_" & url.jsessionID & ".cfusion";targetSession = appSessions[sessionID];</cfscript><cfdump var="#targetSession#" /><cfcatch type="any"><cfdump var="#cfcatch#" /></cfcatch></cftry>