Just wanted to put a reminder that the automatic cPanel updates does not update Perl, instead you have to download them from http://layer1.cpanel.net and run the install such as:

wget http://layer1.cpanel.net/perl587installer.tar.gz
tar -xzvf perl587installer.tar.gz
cd perl587installer
./install

I forgot to add how to test to see if you need to upgrade or not:

perl -V

compare the output to what is posted on the site.