THIS ^^^.
Basically, if the module can be show to have been "orphaned", you can adopt it by becoming a "co-maintainer" as
stevieb mentioned. There is a github repo that that has archived all CPAN modules, but I can't seem to find it atm. Let us know what the module is, and we can probably steer you in the precise direction. Finding it on GH might also mean that you can get in touch with the actual maintainer and send him a PR. (update) - I was thinking of
GitPAN.