# Django 5.2.9 documentation

# Django 1.5.2 release notes

August 13, 2013

This is Django 1.5.2, a bugfix and security release for Django 1.5.

## Mitigated possible XSS attack via user-supplied redirect URLs

Django relies on user input in some cases (e.g. `django.contrib.auth.views.login()`, `django.contrib.comments`, and i18n) to redirect the user to an “on success” URL. The security checks for these redirects (namely `django.utils.http.is_safe_url()`) didn’t check if the scheme is `http(s)` and as such allowed `javascript:...` URLs to be entered. If a developer relied on `is_safe_url()` to provide safe redirect targets and put such a URL into a link, they could suffer from a XSS attack. This bug doesn’t affect Django currently, since we only put this URL into the `Location` response header and browsers seem to ignore JavaScript there.

## XSS vulnerability in `django.contrib.admin`

If a `URLField` is used in Django 1.5, it displays the current value of the field and a link to the target on the admin change page. The display routine of this widget was flawed and allowed for XSS.

## Bugfixes

- Fixed a crash with `prefetch_related()` (#19607) as well as some `pickle` regressions with `prefetch_related` (#20157 and #20257).

- Fixed a regression in `django.contrib.gis` in the Google Map output on Python 3 (#20773).

- Made `DjangoTestSuiteRunner.setup_databases` properly handle aliases for the default database (#19940) and prevented `teardown_databases` from attempting to tear down aliases (#20681).

- Fixed the `django.core.cache.backends.memcached.MemcachedCache` backend’s `get_many()` method on Python 3 (#20722).

- Fixed `django.contrib.humanize` translation syntax errors. Affected languages: Mexican Spanish, Mongolian, Romanian, Turkish (#20695).

- Added support for wheel packages (#19252).

- The CSRF token now rotates when a user logs in.

- Some Python 3 compatibility fixes including #20212 and #20025.

- Fixed some rare cases where `get()` exceptions recursed infinitely (#20278).

- `makemessages` no longer crashes with `UnicodeDecodeError` (#20354).

- Fixed `geojson` detection with SpatiaLite.

- `assertContains()` once again works with binary content (#20237).

- Fixed `ManyToManyField` if it has a Unicode `name` parameter (#20207).

- Ensured that the WSGI request’s path is correctly based on the `SCRIPT_NAME` environment variable or the `FORCE_SCRIPT_NAME` setting, regardless of whether or not either has a trailing slash (#20169).

- Fixed an obscure bug with the `override_settings()` decorator. If you hit an `AttributeError: 'Settings' object has no attribute '_original_allowed_hosts'` exception, it’s probably fixed (#20636).