# Django 5.2.16 documentation

# Django 5.2.2 release notes

June 4, 2025

Django 5.2.2 fixes a security issue with severity “low” and several bugs in 5.2.1.

## CVE-2025-48432: Potential log injection via unescaped request path

Internal HTTP response logging used `request.path` directly, allowing control characters (e.g. newlines or ANSI escape sequences) to be written unescaped into logs. This could enable log injection or forgery, letting attackers manipulate log appearance or structure, especially in logs processed by external systems or viewed in terminals.

Although this does not directly impact Django’s security model, it poses risks when logs are consumed or interpreted by other tools. To fix this, the internal `django.utils.log.log_response()` function now escapes all positional formatting arguments using a safe encoding.

## Bugfixes

- Fixed a crash when using `select_related` against a `ForeignObject` originating from a model with a `CompositePrimaryKey` (#36373).

- Fixed a bug in Django 5.2 where subqueries using `"pk"` to reference models with a `CompositePrimaryKey` failed to raise `ValueError` when too many or too few columns were selected (#36392).

- Fixed a regression in Django 5.2 that caused a crash when no arguments were passed into `QuerySet.union()` (#36388).

- Fixed a regression in Django 5.2 where subclasses of `RemoteUserMiddleware` that had overridden `process_request()` were no longer supported (#36390).

- Fixed a regression in Django 5.2 that caused a crash when using `OuterRef` in the `filter` argument of an `Aggregate` expression (#36404).

- Fixed a regression in Django 5.2 that caused a crash when using `OuterRef` in PostgreSQL aggregate functions `ArrayAgg`, `StringAgg`, and `JSONBAgg` (#36405).

- Fixed a regression in Django 5.2 where admin’s `filter_horizontal` buttons lacked `type="button"`, causing them to intercept form submission when pressing the Enter key (#36423).

- Fixed a bug in Django 5.2 where calling `QuerySet.in_bulk()` with an `id_list` argument on models with a `CompositePrimaryKey` failed to observe database parameter limits (#36416).

- Fixed a bug in Django 5.2 where `HttpRequest.get_preferred_type()` did not account for media type parameters in `Accept` headers, reducing specificity in content negotiation (#36411).

- Fixed a regression in Django 5.2 that caused a crash when using `QuerySet.prefetch_related()` to prefetch a foreign key with a `Prefetch` queryset for a subclass of the foreign target (#36432).