CVE-2019-14233 Django Denial-of-service in strip_tags()

What is CVE-2019-14233?

CVE-2019-14233 is a high-severity denial of service vulnerability in Djangoproject Django, published on 2 Aug 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-400

Which versions are affected by CVE-2019-14233?

7 open source packages ship an affected version, including django and Django. It affects 2 products.

Products include Djangoproject Django, Opensuse Leap.

How do I fix CVE-2019-14233?

Upgrade django to a fixed version for your release line: 1.11.23, 2.1.11 or 2.2.4.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2019-14233 being exploited?

There is no known exploitation of CVE-2019-14233 in the wild and no public exploit code.

Other vulnerabilities in Djangoproject Django

• CVE-2026-4277 Privilege abuse in GenericInlineModelAdmin Critical 9.8
• CVE-2024-53908 Django SQL injection in HasKey(lhs, rhs) on Oracle Critical 9.8
• CVE-2024-42005 Django SQL injection vulnerability Critical 9.8
• CVE-2023-31047 Django bypasses validation when using one form field to upload multiple files Critical 9.8
• CVE-2022-34265 Django `Trunc()` and `Extract()` database functions vulnerable to SQL Injection Critical 9.8

All Djangoproject Django vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2019-14233, DEBIAN-CVE-2019-14233, GHSA-h5jv-4p7w-64jg, PYSEC-2019-12, UBUNTU-CVE-2019-14233.