Response body and chunk parsing would handle non-hex or negative integers incorrectly which could result in misinterpreting HTTP response contents.
https://github.com/python/cpython/pull/150752
https://github.com/python/cpython/issues/150751
https://github.com/python/cpython/commit/9f52b443c002cccfb54bda0706a9276b6b4a109d
https://github.com/python/cpython/commit/2eb2af805c156ca52b316bb4ced5e0ab3971d0ae