In accordance with our security release policy, the Django team is issuing Django 1.11.19, Django 2.1.6, and Django 2.0.11. These releases addresses the security issue detailed below. We encourage all users of Django to upgrade as soon as possible.

CVE-2019-6975: Memory exhaustion in django.utils.numberformat.format()

If django.utils.numberformat.format() -- used by contrib.admin as well as the the floatformat , filesizeformat , and intcomma templates filters -- received a Decimal with a large number of digits or a large exponent, it could lead to significant memory usage due to a call to '{:f}'.format() .

To avoid this, decimals with more than 200 digits are now formatted using scientific notation.

Thanks Sjoerd Job Postmus for reporting this issue.

Affected supported versions Django master branch

Django 2.2 (which will be released in a separate blog post later today)

Django 2.1

Django 2.0

Django 1.11 Per our supported versions policy, Django 1.10 and older are no longer supported.