Vulnerability in Djangoproject Django
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (36.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 36.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.001
Affected products
- Djangoproject Django — versions 6.0, 6.0.5, 5.2
Weakness classification (CWE)
References
- 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92 (vendor-advisory, Vendor Advisory)
- 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92 (mailing-list, Third Party Advisory)
- 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92 (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-6907?
- CVE-2026-6907 is a medium-severity vulnerability in Djangoproject Django, classified under Use of Cache Containing Sensitive Information. CVSS score: 4.3/10. Published 2026-05-05.
- How severe is CVE-2026-6907?
- Medium severity. CVSS v3 base score is 4.3 out of 10.