CVE-2026-35193
LowCVSS 3.1Exploitation Probability (EPSS)
Low risk28th percentile - higher than 28% of all known CVEs
Summary
In Django 5.2 before 5.2.15 and 6.0 before 6.0.6, `django.middleware.cache.UpdateCacheMiddleware` does not add `Authorization` to the `Vary` response header for requests bearing that header without `Cache-Control: public`. This allows remote attackers to read private cached responses via unauthenticated requests to the same URL.
Risk Assessment
Sensitive data cached in responses may be disclosed to unauthenticated users.
Recommendation
Upgrade Django to version 5.2.15, 6.0.6, or later.
Original NVD description (English source)
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.