CVE-2023-43665

python-django: In Django 3.2 before 3.2.22, 4.1 before 4.1.12, and 4.2 before 4.2.6, the django.utils.text.Truncator chars() and wor...

CVE-2023-43665 is fixed in 3 products on 1 platform, first by python-django 1:1.11.11-1ubuntu1.21+esm2, released October 4, 2023. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.5
high
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0146
73rd percentile

In Django 3.2 before 3.2.22, 4.1 before 4.1.12, and 4.2 before 4.2.6, the django.utils.text.Truncator chars() and words() methods (when used with html=True) are subject to a potential DoS (denial of service) attack via certain inputs with very long, potentially malformed HTML text. The chars() and words() methods are used to implement the truncatechars_html and truncatewords_html template filters, which are thus also vulnerable. NOTE: this issue exists because of an incomplete fix for CVE-2019-14232.

Where it's fixed

ProductFixed inFixReleased
Linux
python-django · Debian 12.15 (bookworm) 3:3.2.25-0+deb12u1 DEBIAN-CVE-2023-43665 Nov 3, 2023
python-django · Debian 13.5 (trixie) 3:4.2.6-1 DEBIAN-CVE-2023-43665 Nov 3, 2023
python-django · Debian 14 3:4.2.6-1 DEBIAN-CVE-2023-43665 Nov 3, 2023
python-django · Ubuntu 18.04.6 LTS (bionic) 1:1.11.11-1ubuntu1.21+esm2 python-django 1:1.11.11-1ubuntu1.21+esm2 Oct 4, 2023
python-django-common · Ubuntu 18.04.6 LTS (bionic) 1:1.11.11-1ubuntu1.21+esm2 python-django-common 1:1.11.11-1ubuntu1.21+esm2 Oct 4, 2023
python3-django · Ubuntu 18.04.6 LTS (bionic) 1:1.11.11-1ubuntu1.21+esm2 python3-django 1:1.11.11-1ubuntu1.21+esm2 Oct 4, 2023
python3-django · Ubuntu 20.04 LTS (focal) 2:2.2.12-1ubuntu0.20 python3-django 2:2.2.12-1ubuntu0.20 Oct 4, 2023
python3-django · Ubuntu 22.04.1 LTS (jammy) 2:3.2.12-2ubuntu1.9 python3-django 2:3.2.12-2ubuntu1.9 Oct 4, 2023
python3-django · Ubuntu 24.04.5 LTS (noble) 3:4.2.4-1ubuntu2 python3-django 3:4.2.4-1ubuntu2 Oct 4, 2023
python3-django · Ubuntu 24.10 (oracular) 3:4.2.4-1ubuntu2 python3-django 3:4.2.4-1ubuntu2 Jan 16, 2026
python3-django · Ubuntu 25.04 (plucky) 3:4.2.4-1ubuntu2 python3-django 3:4.2.4-1ubuntu2 Jan 16, 2026

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