Description
An issue was discovered in Django 5.1 before 5.1.5, 5.0 before 5.0.11, and 4.2 before 4.2.18. Lack of upper-bound limit enforcement in strings passed when performing IPv6 validation could lead to a potential denial-of-service attack. The undocumented and private functions clean_ipv6_address and is_valid_ipv6_address are vulnerable, as is the django.forms.GenericIPAddressField form field. (The django.db.models.GenericIPAddressField model field is not affected.)
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| djangoproject | Django | 4.2 – < 4.2.18, 5.0 – < 5.0.11, 5.1 – < 5.1.5 | 4.2.18 |
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 | 3:4.2.18-1 | — |
| Debian 13 | python-django | 3:4.2.18-1 | — |
| Debian 12 | python-django | 3:3.2.25-0+deb12u1 | DSA-6136-1 |
| Debian 11 | python-django | 2:2.2.28-1~deb11u5 | DLA-4030-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | python-django | 3:4.2.11-1ubuntu1.5 | USN-7205-1 |
| Ubuntu 22.04 LTS | python-django | 2:3.2.12-2ubuntu1.16 | USN-7205-1 |
| Ubuntu 20.04 LTS | python-django | 2:2.2.12-1ubuntu0.27 | USN-7205-1 |
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+esm9 | USN-7205-2 |
| Ubuntu Pro 16.04 LTS | python-django | No fix yet | — |
| Ubuntu Pro 14.04 LTS | python-django | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Satellite Utils 6 | foreman +1 | 3.12.0.6-1.el8sat | RHSA-2025:2399 |
| Red Hat Satellite Utils 6 | satellite +1 | 6.16.3-2.el8sat | RHSA-2025:2399 |
| Red Hat Satellite Maintenance 6 | rubygem-foreman_maintain | 1:1.7.12-1.el8sat | RHSA-2025:2399 |
| Red Hat Satellite Capsule 6 | foreman +2 | 3.12.0.6-1.el8sat | RHSA-2025:2399 |
| Red Hat Satellite Capsule 6 | foreman-installer +1 | 1:3.12.0.4-2.el8sat | RHSA-2025:2399 |
| Red Hat Satellite Capsule 6 | python-django +1 | 4.2.19-1.el8pc | RHSA-2025:4576, RHSA-2025:2399 |
| Red Hat Satellite Capsule 6 | python-jinja2 +1 | 3.1.5-1.el8pc | RHSA-2025:4576, RHSA-2025:2399 |
| Red Hat Satellite Capsule 6 | python-pulp-cli +3 | 0.29.2-2.el8pc | RHSA-2025:2399 |
| Red Hat Satellite Capsule 6 | python-pulp-container +1 | 2.20.5-1.el8pc | RHSA-2025:2399 |
| Red Hat Satellite Capsule 6 | python-pulpcore +1 | 3.49.33-1.el8pc | RHSA-2025:2399 |
| Red Hat Satellite Capsule 6 | python-requests +1 | 2.32.3-2.el8pc | RHSA-2025:2399 |
| Red Hat Satellite Capsule 6 | rubygem-foreman_maintain | 1:1.7.12-1.el8sat | RHSA-2025:2399 |
| Red Hat Satellite Capsule 6 | rubygem-rack | 2.2.13-1.el9sat | RHSA-2025:4576 |
| Red Hat Satellite Capsule 6 | satellite +2 | 6.16.3-2.el8sat | RHSA-2025:2399 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Satellite 6 | candlepin +1 | 4.4.21-1.el8sat | RHSA-2025:2399 |
| Red Hat Satellite 6 | foreman +14 | 3.12.0.6-1.el8sat | RHSA-2025:2399 |
| Red Hat Satellite 6 | foreman-installer +1 | 1:3.12.0.4-2.el8sat | RHSA-2025:2399 |
| Red Hat Satellite 6 | python-django +1 | 4.2.19-1.el8pc | RHSA-2025:4576, RHSA-2025:2399 |
| Red Hat Satellite 6 | python-jinja2 +1 | 3.1.5-1.el8pc | RHSA-2025:4576, RHSA-2025:2399 |
| Red Hat Satellite 6 | python-pulp-cli +3 | 0.29.2-2.el8pc | RHSA-2025:2399 |
| Red Hat Satellite 6 | python-pulp-container +1 | 2.20.5-1.el8pc | RHSA-2025:2399 |
| Red Hat Satellite 6 | python-pulpcore +1 | 3.49.33-1.el8pc | RHSA-2025:2399 |
| Red Hat Satellite 6 | python-requests +1 | 2.32.3-2.el8pc | RHSA-2025:2399 |
| Red Hat Satellite 6 | rubygem-foreman_ansible | 14.2.3-1.el8sat | RHSA-2025:2399 |
| Red Hat Satellite 6 | rubygem-foreman_maintain | 1:1.7.12-1.el8sat | RHSA-2025:2399 |
| Red Hat Satellite 6 | rubygem-foreman_openscap | 9.0.5-1.el8sat | RHSA-2025:2399 |
| Red Hat Satellite 6 | rubygem-foreman_remote_execution +1 | 13.2.7-1.el8sat | RHSA-2025:2399 |
| Red Hat Satellite 6 | rubygem-foreman_theme_satellite | 13.3.5-1.el8sat | RHSA-2025:2399 |
| Red Hat Satellite 6 | rubygem-graphql | 1.13.24-1.el9sat | RHSA-2025:4576 |
| Red Hat Satellite 6 | rubygem-katello | 4.14.0.8-1.el8sat | RHSA-2025:2399 |
| Red Hat Satellite 6 | rubygem-rack | 2.2.13-1.el9sat | RHSA-2025:4576 |
| Red Hat Satellite 6 | satellite +2 | 6.16.3-2.el8sat | RHSA-2025:2399 |
| Red Hat Satellite 6 | scap-security-guide-satellite | 1.0.0-1.el8sat | RHSA-2025:2399 |
| Red Hat Ansible Automation Platform Inside 2 | python3.11-jinja2 | 3.1.5-1.el8ap | RHSA-2025:0777 |
| Red Hat Ansible Automation Platform Developer 2 | python3.11-django | 4.2.18-1.el8ap | RHSA-2025:0777 |
| Red Hat Ansible Automation Platform Developer 2 | python3.11-jinja2 | 3.1.5-1.el8ap | RHSA-2025:0777 |
| Red Hat Ansible Automation Platform 2 | automation-controller-venv-tower | 4.6.7-1.el8ap | RHSA-2025:0777 |
| Red Hat Ansible Automation Platform 2 | python3.11-django | 4.2.18-1.el8ap | RHSA-2025:0777 |
| Red Hat Ansible Automation Platform 2 | python3.11-jinja2 | 3.1.5-1.el8ap | RHSA-2025:0777 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | python-Django | 4.2.11-150600.3.15.1 | SUSE-SU-2025:0149-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | python-Django | 5.1.5-1.1 | openSUSE-SU-2025:14662-1 |
| openSUSE Tumbleweed | python-Django4 | 4.2.18-1.1 | openSUSE-SU-2025:14651-1 |
| 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 | 4.2.11-150600.3.15.1 | SUSE-SU-2025:0149-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | py3-django | 4.2.20-r0 | — |
| Alpine v3.23 | py3-django | 4.2.20-r0 | — |
| Alpine v3.22 | py3-django | 4.2.20-r0 | — |
| Alpine v3.21 | py3-django | 4.2.20-r0 | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | py3-django | 5.1.5-r0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | django | >= 5.1, < 5.1.5 | 5.1.5 | GHSA-qcgg-j2x8-h9g8 |
| PyPI | django | >= 5.0, < 5.0.11 | 5.0.11 | GHSA-qcgg-j2x8-h9g8 |
| PyPI | django | >= 4.2, < 4.2.18 | 4.2.18 | GHSA-qcgg-j2x8-h9g8 |
| PyPI | django | >= 5.1, < 5.1.5 · >= 5.0, < 5.0.11 · >= 4.2, < 4.2.18 | 5.1.5, 5.0.11, 4.2.18 | PYSEC-2025-1 |
Advisories 13
- RHSA-2025:4576 Red Hat Security Advisory: Satellite 6.17.0 release Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2025:2399 Red Hat Security Advisory: Satellite 6.16.3 Async Update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- RHSA-2025:0777 Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.5 Product Security and Bug Fix Update Red Hat Security Advisories (RHSA) · Oct 16, 2026
- openSUSE-SU-2026:11270-1 python313-Django5-5.2.16-1.1 on GA media SUSE / openSUSE Security Updates · Jul 15, 2026
- USN-7205-2 python-django vulnerability Ubuntu Security Notices (USN) · Apr 27, 2026
- USN-7205-1 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
- DLA-4030-1 python-django - security update Debian Security (DSA / DLA) · Mar 9, 2026
- WID-SEC-2025-0063 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
- openSUSE-SU-2025:14662-1 python311-Django-5.1.5-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:0149-1 Security update for python-Django SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2025:14651-1 python311-Django4-4.2.18-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026