What does it mean to say "it has no maintainer" about code in the Python standard library? In most other projects the standard library is jointly maintained by the core team. In version history the cgi module seemed to receive small fixes couple of times a year from different people.
"Has no maintainer" means there is no one who has said they have the expertise to be able to render final judgment on a bug report or other issue. "If no active maintainer is listed for a given module, then questionable changes should be discussed on the Core Development Discourse category, while any other issues can and should be decided by any committer." - https://devguide.python.org/core-developers/experts/index.ht...
In practice, what that means is if there is a bug report, like https://github.com/python/cpython/issues/71964 from 2016, then the fix may languish for years as no one in the core team is able to resolve it. You can see several people reported the bug, along with a comment from 2022 that "The cgi module is now deprecated following the acceptance of PEP 594" so will not be fixed.
The fixes I saw likely fall into the un-questionable changes that can be decided by any committer.
