CMS != Framework. Perl has modern web frameworks.
in reply to Perl: Why you no modern web framework?
My obversvations are: 1) PHP owns CMS and Forum software; 2) Ruby owns Sysadmin/Project Management type software; 3) Python owns..idk, I think it's losing its mojo (web framework pun intended), honestly.
There are CMSes, Forums, and Project Management software written in Perl, but the others seem to more enthusiastically supported by the maintainers and communities they engender. This is also known as "why you no good blog, cms, forum software?"