# Django 6.0.2 documentation

# Django 5.2.1 release notes

May 7, 2025

Django 5.2.1 fixes a security issue with severity “moderate” and several bugs in 5.2.

This release was built using an upgraded setuptools, producing filenames compliant with PEP 491 and PEP 625 and thus addressing a PyPI warning about non-compliant distribution filenames. This change only affects the Django packaging process and does not impact Django’s behavior.

## CVE-2025-32873: Denial-of-service possibility in `strip_tags()`

`strip_tags()` would be slow to evaluate certain inputs containing large sequences of incomplete HTML tags. This function is used to implement the `striptags` template filter, which was thus also vulnerable.

`strip_tags()` now raises a `SuspiciousOperation` exception if it encounters an unusually large number of unclosed opening tags.

## Bugfixes

- Fixed a regression in Django 5.2 that caused a crash when annotating aggregate expressions over query that uses explicit grouping by transforms followed by field references (#36292).

- Fixed a regression in Django 5.2 that caused unnecessary queries when prefetching nullable foreign key relationships (#36290).

- Fixed a regression in Django 5.2 that caused a crash of `QuerySet.bulk_create()` with nullable geometry fields on PostGIS (#36289).

- Fixed a regression in Django 5.2 that caused fields to be incorrectly selected when using `QuerySet.alias()` after `values()` (#36299).

- Fixed a data corruption possibility in `file_move_safe()` when `allow_overwrite=True`, where leftover content from a previously larger file could remain after overwriting with a smaller one due to lack of truncation (#36298).

- Fixed a regression in Django 5.2 that caused a crash when using `QuerySet.select_for_update(of=(…))` with `values()/values_list()` including expressions (#36301).

- Fixed a regression in Django 5.2 that caused improper values to be returned from `QuerySet.values_list()` when duplicate field names were specified (#36288).

- Fixed a regression in Django 5.2 where the password validation error message from `MinimumLengthValidator` was not translated when using non-English locales (#36314).

- Fixed a regression in Django 5.2 that caused the `object-tools` block to be rendered twice when using custom admin templates with overridden blocks due to changes in the base admin page block structure (#36331).

- Fixed a regression in Django 5.2, introduced when fixing CVE 2025-26699, where the `wordwrap` template filter did not preserve empty lines between paragraphs after wrapping text (#36341).

- Fixed a regression in Django 5.2 that caused a crash when serializing email alternatives or attachments due to named tuple mismatches (#36309).

- Fixed a regression in Django 5.2 that caused a crash when using `update()` on a `QuerySet` filtered against a related model and including references to annotations through `values()` (#36360).

- Fixed a bug in Django 5.2 that caused composite primary key introspection to wrongly identify `IntegerField` as `AutoField` on SQLite (#36358).

- Fixed a bug in Django 5.2 that caused a redundant `unique_together` constraint to be generated for composite primary keys when using `inspectdb` (#36357).