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20 lines
785 B
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20 lines
785 B
Plaintext
===========================
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Django 4.1.13 release notes
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===========================
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*November 1, 2023*
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Django 4.1.13 fixes a security issue with severity "moderate" in 4.1.12.
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CVE-2023-46695: Potential denial of service vulnerability in ``UsernameField`` on Windows
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=========================================================================================
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The :func:`NFKC normalization <python:unicodedata.normalize>` is slow on
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Windows. As a consequence, ``django.contrib.auth.forms.UsernameField`` was
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subject to a potential denial of service attack via certain inputs with a very
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large number of Unicode characters.
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In order to avoid the vulnerability, invalid values longer than
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``UsernameField.max_length`` are no longer normalized, since they cannot pass
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validation anyway.
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