CVSS 4.0
2.3 lowCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:NCVE-2026-8404
Low (2.3) in djangoproject django. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in django 5.2.15, 6.0.6.
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.
Severity
CVSS 3.1
5.3 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 19% of CVEs (scores of 2026-10-31)
- CWE
- CWE-178
- Published
- Modified
- Record from
- the NVD, synced
Affected
- djangoproject:django
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-8cjm-8mp7-r2xf | PyPI | django | <5.2.15 | 5.2.15 |
| GHSA-8cjm-8mp7-r2xf | PyPI | django | >=6.0.0 <6.0.6 | 6.0.6 |
| PYSEC-2026-201 | PyPI | django | >=5.2 <5.2.15 >=6.0 <6.0.6 | 5.2.15, 6.0.6 |