[security] Open redirect attack due to insufficient validation in Urlparse

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2021-07-26.14:58:32.795>
labels = ['type-security', '3.8', '3.9', '3.10', '3.11', '3.7', 'library']
title = '[security] Open redirect attack due to insufficient validation in Urlparse'
updated_at = <Date 2021-07-30.20:30:12.641>
user = 'https://github.com/ready-research'

bugs.python.org fields:

activity = <Date 2021-07-30.20:30:12.641>
actor = 'terry.reedy'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2021-07-26.14:58:32.795>
creator = 'ready-research'
dependencies = []
files = []
hgrepos = []
issue_num = 44744
keywords = []
message_count = 5.0
messages = ['398232', '398273', '398274', '398276', '398295']
nosy_count = 3.0
nosy_names = ['lys.nikolaou', 'loganasherjones', 'ready-research']
pr_nums = []
priority = 'normal'
resolution = None
stage = 'test needed'
status = 'open'
superseder = None
type = 'security'
url = 'https://bugs.python.org/issue44744'
versions = ['Python 3.6', 'Python 3.7', 'Python 3.8', 'Python 3.9', 'Python 3.10', 'Python 3.11']