Vulnerability in djangoproject Django

[ Description ]Official description

An issue was discovered in Django 6.1 before 6.1.3, 6.0 before 6.0.10, and 5.2 before 5.2.19. The `django.middleware.cache.UpdateCacheMiddleware` and the `django.views.decorators.cache.cache_page()` decorator generate identical cache keys for requests that omit a header listed in the response’s `Vary` header and requests that include that header with an empty value, potentially allowing remote attackers to access private data cached for another request. Earlier, unsupported Django series (such as 5.1.x, 5.0.x, and 4.2.x) were not evaluated and may also be affected. Django would like to thank Andrew Gonzalez for reporting this issue.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund3 Nov 2026WID-SEC-2026-4333

  Django: Multiple vulnerabilities Translated from German

  Risk mediumCVE-2026-113593CVE-2026-114582CVE-2026-111362+3 more CVEs

[ References ]References

• docs.djangoproject.com/en/dev/releases/security
• github.com/django/django/commit/2006a2b068766bf332f1afcc32b7614d8e5759a2
• github.com/django/django/commit/55e2e009b4f3996e5c55af7b22a8c41eb826e892
• github.com/django/django/commit/9007fecd3633cfd90b093ebe106af564347c8aee
• github.com/django/django/commit/c0b7e5e4e4546e8ddc58262f1945938bb9d9ac2d
• groups.google.com/g/django-announce
• www.djangoproject.com/weblog/2026/nov/03/security-releases