CVE-2026-6907
MEDIUMPotential exposure of private data due to incorrect handling of Vary: * in UpdateCacheMiddleware
Title source: cnaDescription
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.
References (3)
Core 3
Core References
Vendor Advisory vendor-advisory
Django security archive
https://docs.djangoproject.com/en/dev/releases/security/
Vendor Advisory vendor-advisory
Django security releases issued: 6.0.5 and 5.2.14
https://www.djangoproject.com/weblog/2026/may/05/security-releases/
Scores
CVSS v3
4.3
EPSS
0.0003
EPSS Percentile
9.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-524
Status
published
Products (7)
djangoproject/Django
5.2 - 5.2.14
djangoproject/django
5.2 - 5.2.14
djangoproject/Django
5.2.14
djangoproject/Django
6.0 - 6.0.5
djangoproject/Django
6.0.5
pypi/Django
5.2 - 5.2.14PyPI
pypi/Django
6.0 - 6.0.5PyPI
Published
May 05, 2026
Tracked Since
May 05, 2026