Medium severity · published Jul 7, 2026
CVE-2026-48588
Potential exposure of private data via cached Set-Cookie response
5.3
CVSS
0.4%
EPSS
No
On KEV
Description
An issue was discovered in Django 6.0 before 6.0.7 and 5.2 before 5.2.16.
`UpdateCacheMiddleware` and the `cache_page()` decorator cache responses that vary on cookies when the incoming request carries unrelated cookies, which allows remote attackers to read private data from the shared cache.
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 Chris Whyland for reporting this issue.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 37% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DJ
Django · djangoproject
6.0 before 6.0.7; 5.2 before 5.2.16 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-48588
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-48588
Patch
https://docs.djangoproject.com/en/dev/releases/security/
Release Notes
https://groups.google.com/g/django-announce
Vendor Advisory
https://www.djangoproject.com/weblog/2026/jul/07/security-releases/
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