django/docs/releases/1.7.11.txt

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Django 1.7.11 release notes
===========================

*November 24, 2015*

Django 1.7.11 fixes a security issue and a data loss bug in 1.7.10.

Fixed settings leak possibility in ``date`` template filter
===========================================================

If an application allows users to specify an unvalidated format for dates and
passes this format to the :tfilter:`date` filter, e.g.
``{{ last_updated|date:user_date_format }}``, then a malicious user could
obtain any secret in the application's settings by specifying a settings key
instead of a date format. e.g. ``"SECRET_KEY"`` instead of ``"j/m/Y"``.

To remedy this, the underlying function used by the ``date`` template filter,
``django.utils.formats.get_format()``, now only allows accessing the date/time
formatting settings.

Bugfixes
========

* Fixed a data loss possibility with :class:`~django.db.models.Prefetch` if
  ``to_attr`` is set to a ``ManyToManyField`` (:ticket:`25693`).