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. Due to the behaviour of the underlying HTMLParser, django.utils.html.strip_tags would be extremely slow to evaluate certain inputs containing large sequences of nested incomplete HTML entities.
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
github.com/django/django
groups.google.com/forum/#!topic/django-announce/jIoju2-KLDs
lists.fedoraproject.org/archives/list/[email protected]/message/STVX7X7IDWAH5SKE6MBMY3TEI6ZODBTK
nvd.nist.gov/vuln/detail/CVE-2019-14233
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