Django up to 5.2.13/6.0.4 django.middleware.cache.UpdateCacheMiddleware cache containing sensitive information

Summaryinfo

A vulnerability was found in Django up to 5.2.13/6.0.4 and classified as problematic. Affected by this vulnerability is an unknown functionality of the component django.middleware.cache.UpdateCacheMiddleware. The manipulation results in use of cache containing sensitive information. This vulnerability was named CVE-2026-6907. The attack may be performed from remote. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Django up to 5.2.13/6.0.4. Affected is an unknown code of the component django.middleware.cache.UpdateCacheMiddleware. The manipulation with an unknown input leads to a use of cache containing sensitive information vulnerability. CWE is classifying the issue as CWE-524. The code uses a cache that contains sensitive information, but the cache can be read by an actor outside of the intended control sphere. This is going to have an impact on confidentiality. CVE summarizes:

An issue was discovered in 6.0 before 6.0.5 and 5.2 before 5.2.14. `django.middleware.cache.UpdateCacheMiddleware` erroneously caches requests where the `Vary` header contained an asterisk (`'*'`). This can lead to private data being stored and served. 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 Ahmad Sadeddin for reporting this issue.

The advisory is available at docs.djangoproject.com. This vulnerability is traded as CVE-2026-6907 since 04/23/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 05/06/2026). This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 312274 (Linux Distros Unpatched Vulnerability : CVE-2026-6907), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.2.14 or 6.0.5 eliminates this vulnerability. The upgrade is hosted for download at docs.djangoproject.com.

The vulnerability is also documented in the vulnerability database at Tenable (312274). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Content Management System

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
• 6.0.0
• 6.0.1
• 6.0.2
• 6.0.3
• 6.0.4

License

• open-source

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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