CVE-2026-8404
3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| djangoproject | Django | 6.0 < 6.0.6 | affected |
| djangoproject | Django | 6.0.6 | unaffected |
| djangoproject | Django | 5.2 < 5.2.15 | affected |
| djangoproject | Django | 5.2.15 | unaffected |
Weaknesses
- CWE-178: CWE-178: Improper Handling of Case Sensitivity
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
- https://docs.djangoproject.com/en/dev/releases/security/
- https://groups.google.com/g/django-announce
- https://www.djangoproject.com/weblog/2026/jun/03/security-releases/
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