CVE-2026-8404
Potential exposure of private data via case-sensitive Cache-Control directives in UpdateCacheMiddleware
CVSS Score
3.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-178 |
| Vendor | djangoproject |
| Product | django |
| Published | Jun 3, 2026 |
| Last Updated | Jun 3, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
djangoproject / Django
6.0 < 6.0.6 5.2 < 5.2.15
References
Credits
🔍 Ahmed Badawe Jake Howard Natalia Bidart