GHSA-5hrc-gvxj-w55p

Django Uses Cache Containing Sensitive Information

Source: GitHub Advisory Database (reviewed) Low CVE-2026-6907

Packages

Ecosystem	Package	Affected	Fixed in
PyPI	Django	>= 6.0, < 6.0.5	6.0.5
PyPI	Django	>= 5.2, < 5.2.14	5.2.14

Details

As written in the advisory (Markdown source, shown as plain text).

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 thanks Ahmad Sadeddin for reporting this issue.

References

External links from the advisory. They lead to third-party sites.

https://nvd.nist.gov/vuln/detail/CVE-2026-6907 advisory
https://docs.djangoproject.com/en/dev/releases/security web
https://github.com/django/django package
https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2026-55.yaml web
https://groups.google.com/g/django-announce web
https://www.djangoproject.com/weblog/2026/may/05/security-releases web