urlparse library detecting wrong hostname leads to open redirect vulnerability

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2019-01-16.07:45:25.247>
labels = ['type-security', '3.8', '3.7', 'library']
title = 'urlparse library detecting wrong hostname leads to open redirect vulnerability'
updated_at = <Date 2019-08-18.06:57:48.636>
user = 'https://github.com/nsonaniya2010'

bugs.python.org fields:

activity = <Date 2019-08-18.06:57:48.636>
actor = 'Ilya Konstantinov'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2019-01-16.07:45:25.247>
creator = 'nsonaniya2010'
dependencies = []
files = ['48058']
hgrepos = []
issue_num = 35748
keywords = []
message_count = 10.0
messages = ['333750', '333755', '333756', '333757', '333758', '333766', '334032', '334043', '334049', '349917']
nosy_count = 7.0
nosy_names = ['orsenthil', 'christian.heimes', 'steven.daprano', 'martin.panter', 'xtreak', 'nsonaniya2010', 'Ilya Konstantinov']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'security'
url = 'https://bugs.python.org/issue35748'
versions = ['Python 3.6', 'Python 3.7', 'Python 3.8']