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Django 3.2.19 release notes

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*May 3, 2023*

Django 3.2.19 fixes a security issue with severity "low" in 3.2.18.

CVE-2023-31047: Potential bypass of validation when uploading multiple files using one form field

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Uploading multiple files using one form field has never been supported by

:class:`.forms.FileField` or :class:`.forms.ImageField` as only the last

uploaded file was validated. Unfortunately, :ref:`uploading_multiple_files`

topic suggested otherwise.

In order to avoid the vulnerability, :class:`~django.forms.ClearableFileInput`

and :class:`~django.forms.FileInput` form widgets now raise ``ValueError`` when

the ``multiple`` HTML attribute is set on them. To prevent the exception and

keep the old behavior, set ``allow_multiple_selected`` to ``True``.

For more details on using the new attribute and handling of multiple files

through a single field, see :ref:`uploading_multiple_files`.