Module::Load versions before 0.22 for Perl allow arbitrary modules outside of @INC to be loaded.
Module names starting with "::" could be passed to the load function to specify arbitrary module paths.
Attackers able to influence module names passed to load could use that bug to execute arbitrary code.
If you are using Perl v5.15.3 or earlier, then upgrade to Module::Load 0.22 or later.
Perl versions after v5.15.4 include newer versions of Module::Load that fix this issue.