Versions mentioned in the description apply to the upstream
Remediation section below for
Ubuntu:16.04 relevant versions.
An issue was discovered in Django 1.11.x before 1.11.23, 2.1.x before 2.1.11, and 2.2.x before 2.2.4. If passed certain inputs, django.utils.encoding.uri_to_iri could lead to significant memory usage due to a recursion when repercent-encoding invalid UTF-8 octet sequences.
python-django to version 1.8.7-1ubuntu5.10 or higher.