Improper Handling of Case Sensitivity in Django - CVE-2026-8404

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Main Vulnerability Database Vulnerabilities #VU133367

Improper Handling of Case Sensitivity in Django - CVE-2026-8404

Published: June 4, 2026


Vulnerability identifier: #VU133367
CSH Severity: Low
CVSS v4: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-8404
CWE-ID: CWE-178
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to "django.middleware.cache.UpdateCacheMiddleware" does not match "Cache-Control" response directives case-insensitively. A remote attacker can gain access to sensitive information on the system.


Affected software

Django
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Package Hub 15
openSUSE Leap
openEuler
Fedora
python-django
python-django-help
python3-Django
python311-Django
python-django5

How to mitigate CVE-2026-8404

Install updates from vendor's website.

Django - addressed in versions 5.2.15, 6.0.6
python-django - addressed in versions 2.2.27-23, 4.2.15-16
python-django-help - addressed in versions 2.2.27-23, 4.2.15-16
python3-Django - addressed in versions 2.2.27-23, 4.2.15-16
python311-Django - update to 4.2.11-150600.3.59.1
python-django5 - addressed in versions 5.2.15-1.fc43, 5.2.15-1.fc44

External References

Related Security Bulletins