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<span id="django-1-8-7-release-notes"></span><h1>Django 1.8.7 release notes<a class="headerlink" href="#django-1-8-7-release-notes" title="Permalink to this headline">¶</a></h1>
<p><em>November 24, 2015</em></p>
<p>Django 1.8.7 fixes a security issue and several bugs in 1.8.6.</p>
<p>Additionally, Django’s vendored version of six, <a class="reference internal" href="../topics/python3.html#module-django.utils.six" title="django.utils.six"><code class="xref py py-mod docutils literal"><span class="pre">django.utils.six</span></code></a>, has
been upgraded to the latest release (1.10.0).</p>
<div class="section" id="s-fixed-settings-leak-possibility-in-date-template-filter">
<span id="fixed-settings-leak-possibility-in-date-template-filter"></span><h2>Fixed settings leak possibility in <code class="docutils literal"><span class="pre">date</span></code> template filter<a class="headerlink" href="#fixed-settings-leak-possibility-in-date-template-filter" title="Permalink to this headline">¶</a></h2>
<p>If an application allows users to specify an unvalidated format for dates and
passes this format to the <a class="reference internal" href="../ref/templates/builtins.html#std:templatefilter-date"><code class="xref std std-tfilter docutils literal"><span class="pre">date</span></code></a> filter, e.g.
<code class="docutils literal"><span class="pre">{{</span> <span class="pre">last_updated|date:user_date_format</span> <span class="pre">}}</span></code>, 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. <code class="docutils literal"><span class="pre">"SECRET_KEY"</span></code> instead of <code class="docutils literal"><span class="pre">"j/m/Y"</span></code>.</p>
<p>To remedy this, the underlying function used by the <code class="docutils literal"><span class="pre">date</span></code> template filter,
<code class="docutils literal"><span class="pre">django.utils.formats.get_format()</span></code>, now only allows accessing the date/time
formatting settings.</p>
</div>
<div class="section" id="s-bugfixes">
<span id="bugfixes"></span><h2>Bugfixes<a class="headerlink" href="#bugfixes" title="Permalink to this headline">¶</a></h2>
<ul class="simple">
<li>Fixed a crash of the debug view during the autumn DST change when
<a class="reference internal" href="../ref/settings.html#std:setting-USE_TZ"><code class="xref std std-setting docutils literal"><span class="pre">USE_TZ</span></code></a> is <code class="docutils literal"><span class="pre">False</span></code> and <code class="docutils literal"><span class="pre">pytz</span></code> is installed.</li>
<li>Fixed a regression in 1.8.6 that caused database routers without an
<code class="docutils literal"><span class="pre">allow_migrate()</span></code> method to crash (<a class="reference external" href="https://code.djangoproject.com/ticket/25686">#25686</a>).</li>
<li>Fixed a regression in 1.8.6 by restoring the ability to use <code class="docutils literal"><span class="pre">Manager</span></code>
objects for the <code class="docutils literal"><span class="pre">queryset</span></code> argument of <code class="docutils literal"><span class="pre">ModelChoiceField</span></code>
(<a class="reference external" href="https://code.djangoproject.com/ticket/25683">#25683</a>).</li>
<li>Fixed a regression in 1.8.6 that caused an application with South migrations
in the <code class="docutils literal"><span class="pre">migrations</span></code> directory to fail (<a class="reference external" href="https://code.djangoproject.com/ticket/25618">#25618</a>).</li>
<li>Fixed a data loss possibility with <a class="reference internal" href="../ref/models/querysets.html#django.db.models.Prefetch" title="django.db.models.Prefetch"><code class="xref py py-class docutils literal"><span class="pre">Prefetch</span></code></a> if
<code class="docutils literal"><span class="pre">to_attr</span></code> is set to a <code class="docutils literal"><span class="pre">ManyToManyField</span></code> (<a class="reference external" href="https://code.djangoproject.com/ticket/25693">#25693</a>).</li>
<li>Fixed a regression in 1.8 by making <code class="docutils literal"><span class="pre">gettext()</span></code> once again return UTF-8
bytestrings on Python 2 if the input is a bytestring (<a class="reference external" href="https://code.djangoproject.com/ticket/25720">#25720</a>).</li>
<li>Fixed serialization of
<a class="reference internal" href="../ref/contrib/postgres/fields.html#django.contrib.postgres.fields.DateRangeField" title="django.contrib.postgres.fields.DateRangeField"><code class="xref py py-class docutils literal"><span class="pre">DateRangeField</span></code></a> and
<a class="reference internal" href="../ref/contrib/postgres/fields.html#django.contrib.postgres.fields.DateTimeRangeField" title="django.contrib.postgres.fields.DateTimeRangeField"><code class="xref py py-class docutils literal"><span class="pre">DateTimeRangeField</span></code></a> (<a class="reference external" href="https://code.djangoproject.com/ticket/24937">#24937</a>).</li>
<li>Fixed the exact lookup of <code class="docutils literal"><span class="pre">ArrayField</span></code> (<a class="reference external" href="https://code.djangoproject.com/ticket/25666">#25666</a>).</li>
<li>Fixed <code class="docutils literal"><span class="pre">Model.refresh_from_db()</span></code> updating of <code class="docutils literal"><span class="pre">ForeignKey</span></code> fields with
<code class="docutils literal"><span class="pre">on_delete=models.SET_NULL</span></code> (<a class="reference external" href="https://code.djangoproject.com/ticket/25715">#25715</a>).</li>
<li>Fixed a duplicate query regression in 1.8 on proxied model deletion
(<a class="reference external" href="https://code.djangoproject.com/ticket/25685">#25685</a>).</li>
<li>Fixed <code class="docutils literal"><span class="pre">set_FOO_order()</span></code> crash when the <code class="docutils literal"><span class="pre">ForeignKey</span></code> of a model with
<code class="docutils literal"><span class="pre">order_with_respect_to</span></code> references a model with a <code class="docutils literal"><span class="pre">OneToOneField</span></code>
primary key (<a class="reference external" href="https://code.djangoproject.com/ticket/25786">#25786</a>).</li>
<li>Fixed incorrect validation for <code class="docutils literal"><span class="pre">PositiveIntegerField</span></code> and
<code class="docutils literal"><span class="pre">PositiveSmallIntegerField</span></code> on MySQL resulting in values greater than
4294967295 or 65535, respectively, passing validation and being silently
truncated by the database (<a class="reference external" href="https://code.djangoproject.com/ticket/25767">#25767</a>).</li>
</ul>
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<h3><a href="../contents.html">Table Of Contents</a></h3>
<ul>
<li><a class="reference internal" href="#">Django 1.8.7 release notes</a><ul>
<li><a class="reference internal" href="#fixed-settings-leak-possibility-in-date-template-filter">Fixed settings leak possibility in <code class="docutils literal"><span class="pre">date</span></code> template filter</a></li>
<li><a class="reference internal" href="#bugfixes">Bugfixes</a></li>
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