CVE-2026-6907 Details
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.
A vulnerability exists in Django's UpdateCacheMiddleware in versions 6.0 prior to 6.0.5 and 5.2 prior to 5.2.14. The middleware incorrectly caches requests with a Vary header containing an asterisk, leading to the unintentional storage and serving of private data. While this issue has been evaluated in supported Django versions, earlier unsupported series may also be affected.
Users can upgrade to Django versions 6.0.5 or 5.2.14 to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 5, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://docs.djangoproject.com/en/dev/releases/security/ | Django Software Foundation | Vendor Advisory |
| https://groups.google.com/g/django-announce | Django Software Foundation | Third Party Advisory |
| https://www.djangoproject.com/weblog/2026/may/05/security-releases/ | Django Software Foundation | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-524 | Use of Cache Containing Sensitive Information | Django Software Foundation |
Affected Products
| Product | Versions |
|---|---|
| djangoproject django | >= 5.2, < 5.2.14 >= 6.0, < 6.0.5 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | Django Software Foundation |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 7, 2026 | Initial Analysis | [email protected] |
| May 5, 2026 | New CVE Received | Django Software Foundation |