CVE-2026-48588

MEDIUM 4.2

Potential exposure of private data via cached Set-Cookie response

CVSS Score

4.2

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-524
Vendor	djangoproject
Product	django
Published	Jul 7, 2026
Last Updated	Jul 7, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

djangoproject / Django

6.0 < 6.0.7 5.2 < 5.2.16

References

NVD ↗ CVE.org ↗ EPSS Data ↗

docs.djangoproject.com: https://docs.djangoproject.com/en/dev/releases/security/ groups.google.com: https://groups.google.com/g/django-announce djangoproject.com: https://www.djangoproject.com/weblog/2026/jul/07/security-releases/

Credits

🔍 Chris Whyland Natalia Bidart Jacob Walls