GHSA-2F9X-5V75-3QV4 Django Denial-of-service possibility in truncatechars_html and truncatewords_html template filters

An issue was discovered in Django 2.0 before 2.0.3, 1.11 before 1.11.11, and 1.8 before 1.8.19. If django.utils.text.Truncator's chars and words methods were passed the html=True argument, they were extremely slow to evaluate certain inputs due to a catastrophic backtracking vulnerability in a...