# Django 4.2.9.dev20231204082947 - dokumentacja

# Django 3.0.7 release notes

June 3, 2020

Django 3.0.7 fixes two security issues and several bugs in 3.0.6.

## CVE-2020-13254: Potential data leakage via malformed memcached keys

In cases where a memcached backend does not perform key validation, passing malformed cache keys could result in a key collision, and potential data leakage. In order to avoid this vulnerability, key validation is added to the memcached cache backends.

## CVE-2020-13596: Possible XSS via admin `ForeignKeyRawIdWidget`

Query parameters for the admin `ForeignKeyRawIdWidget` were not properly URL encoded, posing an XSS attack vector. `ForeignKeyRawIdWidget` now ensures query parameters are correctly URL encoded.

## Poprawki błędów

- Fixed a regression in Django 3.0 by restoring the ability to use field lookups in `Meta.ordering` (#31538).
- Fixed a regression in Django 3.0 where `QuerySet.values()` and `values_list()` crashed if a queryset contained an aggregation and a subquery annotation (#31566).
- Fixed a regression in Django 3.0 where aggregates used wrong annotations when a queryset has multiple subqueries annotations (#31568).
- Fixed a regression in Django 3.0 where `QuerySet.values()` and `values_list()` crashed if a queryset contained an aggregation and an `Exists()` annotation on Oracle (#31584).
- Fixed a regression in Django 3.0 where all resolved `Subquery()` expressions were considered equal (#31607).
- Fixed a regression in Django 3.0.5 that affected translation loading for apps providing translations for territorial language variants as well as a generic language, where the project has different plural equations for the language (#31570).
- Tracking a jQuery security release, upgraded the version of jQuery used by the admin from 3.4.1 to 3.5.1.