Related link: http://www.cherrypy.org/
From cherrypy.org:
After 6 months of intense development since the last stable release, CherryPy-2.1.0 is finally released. Grab the release from the download page page and make sure you read “What’s new in CherryPy 2.1″ for instructions on how to upgrade from 2.0. You can also have a look at the ChangeLog.
On the what’s new in CP 2.1 wiki page, there is reference to a Session authenticate filter, but the page it links to is nonexistent.
Authentication was something that drew me to CherryPy back before 1.0, but has since been removed. I’ve been looking for some authentication mechanism with the blessing of the CP team or, preferably, something of the sort in the CP library. I hope this is it.
Regardless of whether that little desire of mine has come to fruition, great work, folks! CherryPy is fantastic! I wish you many more years of releases!

