---
title: "Django 4.2.27 release notes"
version: 5.1
locale: el
source: https://docs.djangoproject.com/el/5.1/releases/4.2.27/
canonical: https://djangodocs.dev/el/5.1/releases/4.2.27/
---
# Django 4.2.27 release notes

*December 2, 2025*

Django 4.2.27 fixes one security issue with severity «high», one security issue
with severity «moderate», and one bug in 4.2.26.

## CVE-2025-13372: Potential SQL injection in `FilteredRelation` column aliases on PostgreSQL

[`FilteredRelation`](/el/5.1/ref/models/querysets/#django.db.models.FilteredRelation) was subject to SQL injection in column aliases,
using a suitably crafted dictionary, with dictionary expansion, as the
`**kwargs` passed to [`QuerySet.annotate()`](/el/5.1/ref/models/querysets/#django.db.models.query.QuerySet.annotate) or [`QuerySet.alias()`](/el/5.1/ref/models/querysets/#django.db.models.query.QuerySet.alias) on
PostgreSQL.

## CVE-2025-64460: Potential denial-of-service vulnerability in XML `Deserializer`

[XML Serialization](/el/5.1/topics/serialization/#serialization-formats-xml) was subject to a potential
denial-of-service attack due to quadratic time complexity when deserializing
crafted documents containing many nested invalid elements. The internal helper
`django.core.serializers.xml_serializer.getInnerText()` previously
accumulated inner text inefficiently during recursion. It now collects text per
element, avoiding excessive resource usage.

## Bugfixes

- Fixed a regression in Django 4.2.26 where `DisallowedRedirect` was raised
  by [`HttpResponseRedirect`](/el/5.1/ref/request-response/#django.http.HttpResponseRedirect) and
  [`HttpResponsePermanentRedirect`](/el/5.1/ref/request-response/#django.http.HttpResponsePermanentRedirect) for URLs longer than 2048
  characters. The limit is now 16384 characters ([#36743](https://code.djangoproject.com/ticket/36743)).