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 regular expression. The chars() and words() methods are used to implement the truncatechars_html and truncatewords_html template filters, which were thus vulnerable.
CVSS Details
- CVSS 3.1 Base Score: 5.3
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade py3-djangoUpgrade py-django | Mar 14, 2018 | Mar 9, 2018 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Mar 9, 2018 |
| Debian | — | Upgrade python-django | Apr 2, 2018 | Mar 9, 2018 |
| Oracle Solaris | — | Upgrade library/python/django-27 to version 1.11.16-11.4.4.0.1.1.0 on Solaris 11.4Upgrade library/python/django to version 1.11.16-11.4.4.0.1.1.0 on Solaris 11.4 | Dec 17, 2018 | Mar 9, 2018 |
| Suse | — | Upgrade python-django | Mar 28, 2018 | Mar 9, 2018 |
| Ubuntu | — | Upgrade python-djangoUpgrade python3-django | Apr 25, 2018 | Mar 6, 2018 |
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