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.
lists.opensuse.org/opensuse-security-announce/2019-08/msg00006.html
lists.opensuse.org/opensuse-security-announce/2019-08/msg00025.html
docs.djangoproject.com/en/dev/releases/security/
groups.google.com/forum/#%21topic/django-announce/jIoju2-KLDs
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STVX7X7IDWAH5SKE6MBMY3TEI6ZODBTK/
seclists.org/bugtraq/2019/Aug/15
security.gentoo.org/glsa/202004-17
security.netapp.com/advisory/ntap-20190828-0002/
www.debian.org/security/2019/dsa-4498
www.djangoproject.com/weblog/2019/aug/01/security-releases/