Description
An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30.
`ASGIRequest` allows a remote attacker to spoof headers by exploiting an ambiguous mapping of two header variants (with hyphens or with underscores) to a single version with underscores.
Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected.
Django would like to thank Tarek Nakkouch for reporting this issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| djangoproject | Django | 6.0 – < 6.0.4, 5.2 – < 5.2.13, 4.2 – < 4.2.30 | 6.0.4 |
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 | 3:4.2.30-1 | — |
| Debian 13 | python-django | No fix yet | — |
| Debian 12 | python-django | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | python-django | 3:5.2.4-1ubuntu2.4 | USN-8154-1 |
| Ubuntu 24.04 LTS | python-django | 3:4.2.11-1ubuntu1.15 | USN-8154-1 |
| Ubuntu 22.04 LTS | python-django | 2:3.2.12-2ubuntu1.26 | USN-8154-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | python-django | 2:2.2.12-1ubuntu0.29+esm8 | USN-8154-1 |
| Ubuntu Pro 18.04 LTS | python-django | 1:1.11.11-1ubuntu1.21+esm15 | USN-8154-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | python-Django | 5.2.13-1.1 | openSUSE-SU-2026:10567-1 |
| openSUSE Tumbleweed | python-Django4 | 4.2.30-1.1 | openSUSE-SU-2026:10516-1 |
| openSUSE Tumbleweed | python-Django5 | 5.2.16-1.1 | openSUSE-SU-2026:11270-1 |
| openSUSE Tumbleweed | python-Django6 | 6.0.4-1.1 | openSUSE-SU-2026:10517-1 |
| openSUSE Leap 16.0 | python-Django | 5.2.4-bp160.7.1 | openSUSE-SU-2026:20578-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | py3-django | 5.2.13-r0 | — |
| Alpine v3.23 | py3-django | 4.2.30-r0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | django | >= 6.0, < 6.0.4 | 6.0.4 | GHSA-mvfq-ggxm-9mc5 |
| PyPI | django | >= 5.2, < 5.2.13 | 5.2.13 | GHSA-mvfq-ggxm-9mc5 |
| PyPI | django | >= 4.2, < 4.2.30 | 4.2.30 | GHSA-mvfq-ggxm-9mc5 |
| PyPI | django | >= 4.2, < 4.2.30 · >= 5.2, < 5.2.13 · >= 6.0, < 6.0.4 | 4.2.30, 5.2.13, 6.0.4 | PYSEC-2026-51 |
Advisories 7
- openSUSE-SU-2026:11270-1 python313-Django5-5.2.16-1.1 on GA media SUSE / openSUSE Security Updates · Jul 15, 2026
- WID-SEC-2026-1002 Django: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 7, 2026
- USN-8154-1 python-django vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- openSUSE-SU-2026:20578-1 Security update for python-Django SUSE / openSUSE Security Updates · Apr 22, 2026
- openSUSE-SU-2026:10567-1 python311-Django-5.2.13-1.1 on GA media SUSE / openSUSE Security Updates · Apr 17, 2026
- openSUSE-SU-2026:10517-1 python313-Django6-6.0.4-1.1 on GA media SUSE / openSUSE Security Updates · Apr 10, 2026
- openSUSE-SU-2026:10516-1 python311-Django4-4.2.30-1.1 on GA media SUSE / openSUSE Security Updates · Apr 10, 2026
References
- Django security archive vendor-advisory
- Django releases announcements mailing-list
- Django security releases issued: 6.0.4, 5.2.13, and 4.2.30 vendor-advisory