CVE-2026-113593
lowAn issue was discovered in Django 6.1 before 6.1.3, 6.0 before 6.0.10, and 5.2 before 5.2.19.
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://docs.djangoproject.com/en/dev/releases/security/ 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92
- https://github.com/django/django/commit/2006a2b068766bf332f1afcc32b7614d8e5759a2 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92
- https://github.com/django/django/commit/55e2e009b4f3996e5c55af7b22a8c41eb826e892 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92
- https://github.com/django/django/commit/9007fecd3633cfd90b093ebe106af564347c8aee 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92
- https://github.com/django/django/commit/c0b7e5e4e4546e8ddc58262f1945938bb9d9ac2d 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92
- https://groups.google.com/g/django-announce 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92
- https://www.djangoproject.com/weblog/2026/nov/03/security-releases/ 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92