Vulnerability Description
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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Djangoproject | Django | >= 5.2, < 5.2.14 |
Related Weaknesses (CWE)
References
- https://docs.djangoproject.com/en/dev/releases/security/Vendor Advisory
- https://groups.google.com/g/django-announceThird Party Advisory
- https://www.djangoproject.com/weblog/2026/may/05/security-releases/Vendor Advisory
FAQ
What is CVE-2026-6907?
CVE-2026-6907 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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 (`'*'`). Th...
How severe is CVE-2026-6907?
CVE-2026-6907 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-6907?
Check the references section above for vendor advisories and patch information. Affected products include: Djangoproject Django.