CVSS 4.0
2.3 lowCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:NCVE-2026-113593
Low (2.3).
An issue was discovered in Django 6.1 before 6.1.3, 6.0 before 6.0.10, and 5.2 before 5.2.19.
The `django.middleware.cache.UpdateCacheMiddleware` and the `django.views.decorators.cache.cache_page()` decorator generate identical cache keys for requests that omit a header listed in the response’s `Vary` header and requests that include that header with an empty value, potentially allowing remote attackers to access private data cached for another request.
Earlier, unsupported Django series (such as 5.1.x, 5.0.x, and 4.2.x) were not evaluated and may also be affected.
Django would like to thank Andrew Gonzalez for reporting this issue.
Severity
CVSS 3.1
3.1 lowCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N- CISA's assessment (SSVC)
- Exploitation: none · Automatable: no · Technical impact: partial, assessed 2026-11-03. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
- CWE
- CWE-524 Use of Cache Containing Sensitive Information
- Published
- Modified
- Record from
- the NVD, synced
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Explain CVE-2026-113593 for an engineer deciding whether to act. Use https://cve.bz/api/public/cves/CVE-2026-113593?via=ask-ai-copy and https://cve.bz/cve/CVE-2026-113593?via=ask-ai-copy as the source of truth: what is affected and which versions fix it, whether it is in CISA KEV, public exploits, and its EPSS (an internet-wide 30-day estimate of exploitation activity, not a forecast for my systems). If they give no fixed versions, use the CVE record https://cveawg.mitre.org/api/cve/CVE-2026-113593 or the vendor advisory, not third-party mirrors. Tell me how to check whether I am affected and how to verify a fix. Cite the sources and say where they are uncertain.Opens a third-party assistant; its answer is its own, not cve.bz's. The prompt holds only this CVE's id and public links.
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| djangoproject Django | from 6.1 before 6.1.3 |
| djangoproject Django | from 6.0 before 6.0.10 |
| djangoproject Django | from 5.2 before 5.2.19 |
Attack patterns (CAPEC)
- CAPEC-204 Lifting Sensitive Data Embedded in Cache Severity: Medium
The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.
References
- https://docs.djangoproject.com/en/dev/releases/security/
- https://github.com/django/django/commit/2006a2b068766bf332f1afcc32b7614d8e5759a2
- https://github.com/django/django/commit/55e2e009b4f3996e5c55af7b22a8c41eb826e892
- https://github.com/django/django/commit/9007fecd3633cfd90b093ebe106af564347c8aee
- https://github.com/django/django/commit/c0b7e5e4e4546e8ddc58262f1945938bb9d9ac2d
- https://groups.google.com/g/django-announce
- https://www.djangoproject.com/weblog/2026/nov/03/security-releases/