CVE-2026-8404

LOW EPSS 20.2%
Published Jun 3, 20263w ago · Modified Jun 17, 20261w ago
2.3 CVSS 4.0
Low
Find Similar
Published Jun 3, 2026 3w ago
Last Modified Jun 17, 2026 1w ago

Description

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.

CVSS Details

Base Score
2.3
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction P
Scope X

Threat Intelligence

EPSS Exploit Probability
20.2% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-178

Affected Products 2

VendorProductVersionRange
djangoprojectdjango*≥5.2  –  <5.2.15
djangoprojectdjango*≥6.0  –  <6.0.6

References 3

  • docs.djangoproject.com https://docs.djangoproject.com/en/dev/releases/security/
    PatchVendor Advisory
  • groups.google.com https://groups.google.com/g/django-announce
    Release Notes
  • djangoproject.com https://www.djangoproject.com/weblog/2026/jun/03/security-releases/
    PatchVendor Advisory

Remediation

  • docs.djangoproject.com https://docs.djangoproject.com/en/dev/releases/security/
    PatchVendor Advisory
  • djangoproject.com https://www.djangoproject.com/weblog/2026/jun/03/security-releases/
    PatchVendor Advisory