Django 5.0.8 release notes

August 6, 2024

Django 5.0.8 fixes three security issues with severity “moderate”, one security issue with severity “high”, and several bugs in 5.0.7.

CVE-2024-41989: Memory exhaustion in django.utils.numberformat.floatformat()

If floatformat received a string representation of a number in scientific notation with a large exponent, it could lead to significant memory consumption.

To avoid this, decimals with more than 200 digits are now returned as is.

CVE-2024-41990: Potential denial-of-service vulnerability in django.utils.html.urlize()

urlize and urlizetrunc were subject to a potential denial-of-service attack via very large inputs with a specific sequence of characters.

CVE-2024-41991: Potential denial-of-service vulnerability in django.utils.html.urlize() and AdminURLFieldWidget

urlize, urlizetrunc, and AdminURLFieldWidget were subject to a potential denial-of-service attack via certain inputs with a very large number of Unicode characters.

CVE-2024-42005: Potential SQL injection in QuerySet.values() and values_list()

QuerySet.values() and values_list() methods on models with a JSONField were subject to SQL injection in column aliases, via a crafted JSON object key as a passed *arg.

Bugfixes

• Added missing validation for UniqueConstraint(nulls_distinct=False) when using *expressions (#35594).

• Fixed a regression in Django 5.0 where ModelAdmin.action_checkbox could break the admin changelist HTML page when rendering a model instance with a __html__ method (#35606).

• Fixed a crash when creating a model with a Field.db_default and a Meta.constraints constraint composed of __endswith, __startswith, or __contains lookups (#35625).

• Fixed a regression in Django 5.0.7 that caused a crash in LocaleMiddleware when processing a language code over 500 characters (#35627).

• Fixed a bug in Django 5.0 that caused a system check crash when ModelAdmin.date_hierarchy was a GeneratedField with an output_field of DateField or DateTimeField (#35628).

• Fixed a bug in Django 5.0 which caused constraint validation to either crash or incorrectly raise validation errors for constraints referring to fields using Field.db_default (#35638).

• Fixed a crash in Django 5.0 when saving a model containing a FileField with a db_default set (#35657).