# Django 5.2.8 documentation

# Django 5.0.7 release notes

July 9, 2024

Django 5.0.7 fixes two security issues with severity “moderate”, two security issues with severity “low”, and one bug in 5.0.6.

## CVE-2024-38875: Potential denial-of-service vulnerability in `django.utils.html.urlize()`

`urlize` and `urlizetrunc` were subject to a potential denial-of-service attack via certain inputs with a very large number of brackets.

## CVE-2024-39329: Username enumeration through timing difference for users with unusable passwords

The `authenticate()` method allowed remote attackers to enumerate users via a timing attack involving login requests for users with unusable passwords.

## CVE-2024-39330: Potential directory-traversal via `Storage.save()`

Derived classes of the `Storage` base class which override `generate_filename()` without replicating the file path validations existing in the parent class, allowed for potential directory-traversal via certain inputs when calling `save()`.

Built-in `Storage` sub-classes were not affected by this vulnerability.

## CVE-2024-39614: Potential denial-of-service vulnerability in `get_supported_language_variant()`

`get_supported_language_variant()` was subject to a potential denial-of-service attack when used with very long strings containing specific characters.

To mitigate this vulnerability, the language code provided to `get_supported_language_variant()` is now parsed up to a maximum length of 500 characters.

When the language code is over 500 characters, a `ValueError` will now be raised if `strict` is `True`, or if there is no generic variant and `strict` is `False`.

## Bugfixes

- Fixed a bug in Django 5.0 that caused a crash of `Model.full_clean()` on unsaved model instances with a `GeneratedField` and certain defined `Meta.constraints` (#35560).