# documentación de Django - 5.1.7

# Django 3.2.2 release notes

May 6, 2021

Django 3.2.2 fixes a security issue and a bug in 3.2.1.

## CVE-2021-32052: Header injection possibility since `URLValidator` accepted newlines in input on Python 3.9.5+

On Python 3.9.5+, `URLValidator` didn’t prohibit newlines and tabs. If you used values with newlines in HTTP response, you could suffer from header injection attacks. Django itself wasn’t vulnerable because `HttpResponse` prohibits newlines in HTTP headers.

Moreover, the `URLField` form field which uses `URLValidator` silently removes newlines and tabs on Python 3.9.5+, so the possibility of newlines entering your data only existed if you are using this validator outside of the form fields.

This issue was introduced by the bpo-43882 fix.

## Bugfixes

- Prevented, following a regression in Django 3.2.1, `makemigrations` from generating infinite migrations for a model with `Meta.ordering` contained `OrderBy` expressions (#32714).