Django Software Foundation up to 5.2.18/6.0.9/6.1.2 UpdateCacheMiddleware cache.py django.views.decorators.cache.cache_page access control

Summaryinfo

A vulnerability categorized as problematic has been discovered in Django Software Foundation Django up to 5.2.18/6.0.9/6.1.2. This affects the function django.views.decorators.cache.cache_page of the file django/middleware/cache.py of the component UpdateCacheMiddleware. Executing a manipulation can lead to access control. This vulnerability appears as CVE-2026-113593. The attack may be performed from remote. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Django Software Foundation Django up to 5.2.18/6.0.9/6.1.2 and classified as problematic. This vulnerability affects the function django.views.decorators.cache.cache_page of the file django/middleware/cache.py of the component UpdateCacheMiddleware. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality. CVE summarizes:

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.

The advisory is available at docs.djangoproject.com. This vulnerability was named CVE-2026-113593 since 10/20/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 11/03/2026). This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

Upgrading to version 5.2.19, 6.0.10 or 6.1.3 eliminates this vulnerability.

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Productinfo

Type

• Content Management System

Vendor

• Django Software Foundation

Name

• Django

Version

• 5.2.0
• 5.2.1
• 5.2.2
• 5.2.3
• 5.2.4
• 5.2.5
• 5.2.6
• 5.2.7
• 5.2.8
• 5.2.9
• 5.2.10
• 5.2.11
• 5.2.12
• 5.2.13
• 5.2.14
• 5.2.15
• 5.2.16
• 5.2.17
• 5.2.18
• 6.0.0
• 6.0.1
• 6.0.2
• 6.0.3
• 6.0.4
• 6.0.5
• 6.0.6
• 6.0.7
• 6.0.8
• 6.0.9
• 6.1.0
• 6.1.1
• 6.1.2

License

• open-source

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CPE 2.2info

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