CVE-2026-48588 MEDIUM

CVE-2026-48588: Potential exposure of private data via cached Set-Cookie response

Vendor Djangoproject
Product Django
Weakness CWE-524
Published July 7, 2026
Last update July 7, 2026

CVSS base score

4.2/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction Required
Confidentiality Low
Integrity None

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

July 7, 2026 CVE published
July 7, 2026 Record updated