CVE-2026-35193 Details
Description
An issue was discovered in Django 5.2 before 5.2.15 and 6.0 before 6.0.6. `django.middleware.cache.UpdateCacheMiddleware` in Django does not add `Authorization` to the `Vary` response header for requests bearing that header without `Cache-Control: public`, which allows remote attackers to read private cached responses via unauthenticated requests to the same URL. 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 Shai Berger for reporting this issue.
A vulnerability exists in Django's UpdateCacheMiddleware component, specifically in versions 5.2 prior to 5.2.15 and 6.0 prior to 6.0.6. The issue arises because the middleware fails to include the 'Authorization' header in the 'Vary' response header for requests that contain the 'Authorization' header but lack 'Cache-Control: public'. This oversight allows remote attackers to access private cached responses through unauthenticated requests to the same URL. Additionally, earlier unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) may also be affected.
Users can upgrade to Django versions 6.0.6 or 5.2.15 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 Jun 3, 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 | PatchVendor Advisory |
| https://groups.google.com/g/django-announce | Django Software Foundation | Release Notes |
| https://www.djangoproject.com/weblog/2026/jun/03/security-releases/ | Django Software Foundation | PatchVendor 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, < 5.2.15 >= 6.0, < 6.0.6 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 21, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | Django Software Foundation |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 5, 2026 | Initial Analysis | [email protected] |
| Jun 3, 2026 | New CVE Received | Django Software Foundation |