CVE-2026-8404

LOW CVSS 4.0: 2.3 EPSS 0.29%
Updated Jul 21, 2026
Djangoproject
Parameter Value
CVSS 2.3 (LOW)
Affected Versions 5.2 — 6.0.6
Fixed In 5.2.15
Type CWE-178
Vendor Djangoproject
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
Passive
Minimal interaction

Impact Assessment

Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
None
No disruption

CVSS Vector v4.0

Weakness Type (CWE)

Vulnerable Products 2

Configuration From (including) Up to (excluding)
Djangoproject Django
cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*
5.2 5.2.15
Djangoproject Django
cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*
6.0 6.0.6