[issue23505] Urlparse insufficient validation leads to open redirect

[Yassine ABOUKIR]

Changes by Yassine ABOUKIR <yaaboukir at gmail.com>:


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versions: +Python 2.7, Python 3.2, Python 3.3, Python 3.4, Python 3.5, Python 3.6

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue23505>
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