Description
An issue was discovered in Django 4.2 before 4.2.21, 5.1 before 5.1.9, and 5.2 before 5.2.1. The django.utils.html.strip_tags() function is vulnerable to a potential denial-of-service (slow performance) when processing inputs containing large sequences of incomplete HTML tags. The template filter striptags is also vulnerable, because it is built on top of strip_tags().
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| djangoproject | Django | 4.2 – < 4.2.21, 5.1 – < 5.1.9, 5.2 – < 5.2.1 | 4.2.21 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | python-django | 3:4.2.21-1 | — |
| Debian 13 | python-django | 3:4.2.21-1 | — |
| Debian 12 | python-django | 3:3.2.25-0+deb12u1 | DSA-6136-1 |
| Debian 11 | python-django | 2:2.2.28-1~deb11u7 | DLA-4210-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | python-django | 3:4.2.18-1ubuntu1.1 | — |
| Ubuntu 24.04 LTS | python-django | 3:4.2.11-1ubuntu1.7 | USN-7501-1 |
| Ubuntu 22.04 LTS | python-django | 2:3.2.12-2ubuntu1.18 | USN-7501-1 |
| Ubuntu 20.04 LTS | python-django | 2:2.2.12-1ubuntu0.29 | USN-7501-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | python-django | 1:1.11.11-1ubuntu1.21+esm11 | USN-7501-2 |
| Ubuntu Pro 16.04 LTS | python-django | No fix yet | — |
| Ubuntu Pro 14.04 LTS | python-django | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | python-Django | 4.2.11-150600.3.21.1 | SUSE-SU-2025:01523-1 |
| SLES 15 SP6 | python-Django | 4.2.11-150600.3.21.1 | SUSE-SU-2025:1523-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | python-Django | 5.2.1-1.1 | openSUSE-SU-2025:15087-1 |
| openSUSE Tumbleweed | python-Django4 | 4.2.21-1.1 | openSUSE-SU-2025:15082-1 |
| openSUSE Tumbleweed | python-Django5 | 5.2.16-1.1 | openSUSE-SU-2026:11270-1 |
| openSUSE Tumbleweed | python-Django6 | 6.0-1.1 | openSUSE-SU-2026:10005-1 |
| openSUSE Leap 15.6 | python-Django | 4.2.11-150600.3.21.1 | SUSE-SU-2025:1523-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | py3-django | 4.2.21-r0 | — |
| Alpine v3.23 | py3-django | 4.2.21-r0 | — |
| Alpine v3.22 | py3-django | 4.2.21-r0 | — |
| Alpine v3.21 | py3-django | 4.2.21-r0 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
GitHub 1 repository
-
Apollo-R3bot/django-vulnerability-CVE-2025-32873 ★ 0 · Jun 3, 2025
Django Security Issue (CVE-2025-32873)
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | django | >= 4.2, < 4.2.21 | 4.2.21 | GHSA-8j24-cjrq-gr2m |
| PyPI | django | >= 5.1, < 5.1.9 | 5.1.9 | GHSA-8j24-cjrq-gr2m |
| PyPI | django | >= 5.2, < 5.2.1 | 5.2.1 | GHSA-8j24-cjrq-gr2m |
| PyPI | django | >= 4.2, < 4.2.21 · >= 5.1, < 5.1.9 · >= 5.2, < 5.2.1 | 4.2.21, 5.1.9, 5.2.1 | PYSEC-2025-37 |
Advisories 11
- openSUSE-SU-2026:11270-1 python313-Django5-5.2.16-1.1 on GA media SUSE / openSUSE Security Updates · Jul 15, 2026
- USN-7501-1 python-django vulnerability Ubuntu Security Notices (USN) · Apr 27, 2026
- USN-7501-2 python-django vulnerability Ubuntu Security Notices (USN) · Apr 27, 2026
- openSUSE-SU-2026:10005-1 python312-Django6-6.0-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2025:15087-1 python311-Django-5.2.1-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- openSUSE-SU-2025:15082-1 python311-Django4-4.2.21-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:1523-1 Security update for python-Django SUSE / openSUSE Security Updates · Mar 23, 2026
- DLA-4210-1 python-django - security update Debian Security (DSA / DLA) · Mar 9, 2026
- WID-SEC-2025-0964 Django: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Feb 15, 2026
- DSA-6136-1 python-django - security update Debian Security (DSA / DLA) · Feb 15, 2026
- SUSE-SU-2025:01523-1 Security update for python-Django SUSE / openSUSE Security Updates · Feb 4, 2026