CVE-2026-8404
Publication date 3 June 2026
Last updated 2 October 2026
Ubuntu priority
Description
An issue was discovered in Django 5.2 before 5.2.15 and 6.0 before 6.0.6. `django.middleware.cache.UpdateCacheMiddleware` in Django does not match `Cache-Control` response directives case-insensitively, which allows remote attackers to read responses that were incorrectly cached because their `Cache-Control` directives used uppercase or mixed-case values. 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 Ahmed Badawe for reporting this issue.
Why is this CVE low priority?
The Django developers have rated this issue as being low severity
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| python-django | 26.04 LTS resolute |
Fixed 3:5.2.9-0ubuntu4.3
|
| 24.04 LTS noble |
Fixed 3:4.2.11-1ubuntu1.18
|
|
| 22.04 LTS jammy |
Fixed 2:3.2.12-2ubuntu1.29
|
|
| 20.04 LTS focal |
Fixed 2:2.2.12-1ubuntu0.29+esm10
|
|
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial |
Not affected
|
|
| 14.04 LTS trusty |
Not affected
|
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CVSS version:
Base score
2.3 · Low
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Base score
3.1 · Low
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
References
Related Ubuntu Security Notices (USN)
- USN-8848-1
- Django vulnerabilities
- 30 September 2026