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[3.10] bpo-43882 - Mention urllib.parse changes in Whats new section. #26275

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May 21, 2021
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[3.10] bpo-43882 - Mention urllib.parse changes in Whats new section. #26275

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[3.10] bpo-43882 - Mention urllib.parse changes in Whats new section.
orsenthil May 21, 2021
6227fcf
escape the \n chars, ReSTify :rfc:, urllib.parse is a :mod:
gpshead May 21, 2021
bd97122
minor formatting.
orsenthil May 21, 2021
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7 changes: 7 additions & 0 deletions Doc/whatsnew/3.10.rst
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Expand Up @@ -1337,6 +1337,13 @@ functions internally. For more details, please see their respective
documentation.
(Contributed by Adam Goldschmidt, Senthil Kumaran and Ken Jin in :issue:`42967`.)

The presence of newline or tab characters in parts of a URL allows for some
forms of attacks. Following the WHATWG specification that updates :rfc:`3986`,
ASCII newline ``\n``, ``\r`` and tab ``\t`` characters are stripped from the
URL by the parser in :mod:`urllib.parse` preventing such attacks. The removal
characters are controlled by a new module level variable
``urllib.parse._UNSAFE_URL_BYTES_TO_REMOVE``. (See :issue:`43882`)

xml
---

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