I've uploaded a 2.0.2-SNAPSHOT of jboss-cl for you to try. This has a Module.getModuleForClass() which at least for our classloader implementation doesn't load the class. See BaseClassLoader.findClassLoaderForClass() for how it works without exposing nasty things. ;-) You'll need to put its use in a privileged block since I require the new RuntimePermission("getClassLoader") with a security manager installed. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4201405#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...