CVE-2026-6907

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.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://docs.djangoproject.com/en/dev/releases/security/	Vendor Advisory
https://groups.google.com/g/django-announce	Third Party Advisory
https://www.djangoproject.com/weblog/2026/may/05/security-releases/	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:djangoproject:django::::::::
	cpe:2.3:a:djangoproject:django::::::::

History

26 Oct 2026, 19:10

Type	Values Removed	Values Added
Summary		(es) Se descubrió un problema en 6.0 anterior a 6.0.5 y 5.2 anterior a 5.2.14. ’django.middleware.cache.UpdateCacheMiddleware’ almacena en caché erróneamente las solicitudes donde el encabezado ’Vary’ contenía un asterisco (’*’). Esto puede llevar a que se almacenen y sirvan datos privados. Series de Django anteriores y no compatibles (como 5.0.x, 4.1.x y 3.2.x) no fueron evaluadas y también podrían verse afectadas. Django desea agradecer a Ahmad Sadeddin por informar sobre este problema.

Information

Published : 2026-05-05 16:16

Updated : 2026-10-26 19:10

NVD link : CVE-2026-6907

Mitre link : CVE-2026-6907

CVE.ORG link : CVE-2026-6907

JSON object : View

Products Affected

djangoproject

django

CWE

CWE-524

Use of Cache Containing Sensitive Information

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This can lead to private data being stored and served.\nEarlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected.\nDjango would like to thank Ahmad Sadeddin for reporting this issue."}, {"lang": "es", "value": "Se descubri\u00f3 un problema en 6.0 anterior a 6.0.5 y 5.2 anterior a 5.2.14.\n\u2019django.middleware.cache.UpdateCacheMiddleware\u2019 almacena en cach\u00e9 err\u00f3neamente las solicitudes donde el encabezado \u2019Vary\u2019 conten\u00eda un asterisco (\u2019*\u2019). Esto puede llevar a que se almacenen y sirvan datos privados.\nSeries de Django anteriores y no compatibles (como 5.0.x, 4.1.x y 3.2.x) no fueron evaluadas y tambi\u00e9n podr\u00edan verse afectadas.\nDjango desea agradecer a Ahmad Sadeddin por informar sobre este problema."}], "lastModified": "2026-10-26T19:10:00.163", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5AD5B44B-7569-458C-8F44-3021D9CC577C", "versionEndExcluding": "5.2.14", "versionStartIncluding": "5.2"}, {"criteria": "cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "30ADB5F4-66B5-4015-BB55-CCB31106AB95", "versionEndExcluding": "6.0.5", "versionStartIncluding": "6.0"}], "operator": "OR"}]}], "sourceIdentifier": "6a34fbeb-21d4-45e7-8e0a-62b95bc12c92"}