Description
An issue was discovered in 6.0 before 6.0.5 and 5.2 before 5.2.14.
`django.middleware.cache.UpdateCacheMiddleware` erroneously caches requests where the `Vary` header contained an asterisk (`'*'`). This can lead to private data being stored and served.
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 Ahmad Sadeddin for reporting this issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| djangoproject | Django | 6.0 – < 6.0.5, 5.2 – < 5.2.14 | 6.0.5 |
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 | 3:5.2.14-1 | — |
| Debian 13 | python-django | No fix yet | — |
| Debian 12 | python-django | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | python-django | 3:5.2.9-0ubuntu4.1 | USN-8848-1 |
| Ubuntu 25.10 | python-django | 3:5.2.4-1ubuntu2.5 | — |
| Ubuntu 24.04 LTS | python-django | 3:4.2.11-1ubuntu1.16 | USN-8848-1 |
| Ubuntu 22.04 LTS | python-django | 2:3.2.12-2ubuntu1.27 | USN-8848-1 |
Show 4 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+esm10 | USN-8848-1 |
| Ubuntu Pro 18.04 LTS | python-django | 1:1.11.11-1ubuntu1.21+esm17 | USN-8848-1 |
| Ubuntu Pro 16.04 LTS | python-django | 1.8.7-1ubuntu5.15+esm13 | USN-8848-1 |
| Ubuntu Pro 14.04 LTS | python-django | 1.6.11-0ubuntu1.3+esm12 | USN-8848-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | python-Django | 5.2.14-1.1 | openSUSE-SU-2026:10718-1 |
| openSUSE Tumbleweed | python-Django4 | 4.2.30-2.1 | openSUSE-SU-2026:10708-1 |
| openSUSE Tumbleweed | python-Django5 | 5.2.16-1.1 | openSUSE-SU-2026:11270-1 |
| openSUSE Tumbleweed | python-Django6 | 6.0.5-1.1 | openSUSE-SU-2026:10709-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | py3-django | 5.2.14-r0 | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | py3-django +2 | 6.0.5-r0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | django | >= 6.0, < 6.0.5 | 6.0.5 | GHSA-5hrc-gvxj-w55p |
| PyPI | django | >= 5.2, < 5.2.14 | 5.2.14 | GHSA-5hrc-gvxj-w55p |
| PyPI | django | >= 5.2, < 5.2.14 · >= 6.0, < 6.0.5 | 5.2.14, 6.0.5 | PYSEC-2026-55 |
Advisories 6
- USN-8848-1 python-django vulnerabilities Ubuntu Security Notices (USN) · Oct 2, 2026
- WID-SEC-2026-1373 Django: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 30, 2026
- openSUSE-SU-2026:11270-1 python313-Django5-5.2.16-1.1 on GA media SUSE / openSUSE Security Updates · Jul 15, 2026
- openSUSE-SU-2026:10718-1 python311-Django-5.2.14-1.1 on GA media SUSE / openSUSE Security Updates · May 8, 2026
- openSUSE-SU-2026:10709-1 python313-Django6-6.0.5-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2026
- openSUSE-SU-2026:10708-1 python311-Django4-4.2.30-2.1 on GA media SUSE / openSUSE Security Updates · May 7, 2026
References
- Django security archive vendor-advisory
- Django releases announcements mailing-list
- Django security releases issued: 6.0.5 and 5.2.14 vendor-advisory