CVE-2026-8404Potential exposure of private data via case-sensitive Cache-Control directives in UpdateCacheMiddleware
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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 match `Cache-Control` response directives case-insensitively, which allows remote attackers to read responses that were incorrectly cached because their `Cache-Control` directives used uppercase or mixed-case values. 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 Ahmed Badawe for reporting this issue.
- CVSS
- 3.1 LOW (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
- Weakness (CWE)
- CWE-178
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- DSF
- NVD analysis
- Analyzed
- Record last updated
- Jun 3, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
djangoproject Django djangoproject:django (from the name) | from 6.0 before 6.0.6; 6.0.6 not affected; from 5.2 before 5.2.15; 5.2.15 not affected | CNA record |
djangoproject django djangoproject:django | from 5.2 before 5.2.15; from 6.0 before 6.0.6 | NVD |
References
- https://docs.djangoproject.com/en/dev/releases/security/vendor-advisory, patch
- https://groups.google.com/g/django-announcemailing-list, release-notes
- https://www.djangoproject.com/weblog/2026/jun/03/security-releases/vendor-advisory, patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.