CVE-2026-8404
LOWPotential exposure of private data via case-sensitive Cache-Control directives in UpdateCacheMiddleware
Title source: cnaDescription
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.
References (3)
Core 3
Core References
Vendor Advisory vendor-advisory
Django security archive
https://docs.djangoproject.com/en/dev/releases/security/
Vendor Advisory vendor-advisory
Django security releases issued: 6.0.6 and 5.2.15
https://www.djangoproject.com/weblog/2026/jun/03/security-releases/
Scores
CVSS v3
3.1
EPSS
0.0030
EPSS Percentile
21.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-178
Status
published
Products (5)
djangoproject/Django
5.2 - 5.2.15
djangoproject/django
5.2 - 5.2.15
djangoproject/Django
5.2.15
djangoproject/Django
6.0 - 6.0.6
djangoproject/Django
6.0.6
Published
Jun 03, 2026
Tracked Since
Jun 03, 2026