# Django 5.2.9 - dokumentacja

# Django 4.2.3 release notes

July 3, 2023

Django 4.2.3 fixes a security issue with severity „moderate” and several bugs in 4.2.2.

## CVE-2023-36053: Potential regular expression denial of service vulnerability in `EmailValidator`/`URLValidator`

`EmailValidator` and `URLValidator` were subject to potential regular expression denial of service attack via a very large number of domain name labels of emails and URLs.

## Poprawki błędów

- Fixed a regression in Django 4.2 that caused incorrect alignment of timezone warnings for `DateField` and `TimeField` in the admin (#34645).

- Fixed a regression in Django 4.2 that caused incorrect highlighting of rows in the admin changelist view when `ModelAdmin.list_editable` contained a `BooleanField` (#34638).