Copyright © 2012 Red Hat, Inc. All rights reserved. Low 2026-07-07T14:00:00 django: Django: Information disclosure due to improper caching of Set-Cookie responses 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N CWE-524

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.

A flaw was found in Django. When django.middleware.cache.UpdateCacheMiddleware or django.views.decorators.cache.cache_page is in use, responses that set a cookie are not excluded from caching if the request includes any cookie, even when that cookie is unrelated to the response (for example, a language or theme preference). A remote attacker can retrieve a cached response intended for another user and obtain sensitive cookie data from the stored Set-Cookie header.

This flaw is rated as Low impact. When Django's UpdateCacheMiddleware or cache_page decorator is configured, responses containing sensitive Set-Cookie headers may be improperly cached and subsequently disclosed to other users if the initial request included any cookie. This issue primarily affects Red Hat products utilizing Django with specific caching configurations, potentially leading to limited information exposure. Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability. Red Hat Ansible Automation Platform 2 Fix deferred ansible-automation-platform-24/lightspeed-rhel8 Red Hat Ansible Automation Platform 2 Fix deferred ansible-automation-platform-25/lightspeed-rhel8 Red Hat Ansible Automation Platform 2 Fix deferred ansible-automation-platform-26/controller-rhel9 Red Hat Ansible Automation Platform 2 Fix deferred ansible-automation-platform-26/eda-controller-rhel9 Red Hat Ansible Automation Platform 2 Fix deferred ansible-automation-platform-26/gateway-rhel9 Red Hat Ansible Automation Platform 2 Fix deferred ansible-automation-platform-26/hub-rhel9 Red Hat Ansible Automation Platform 2 Fix deferred ansible-automation-platform-26/lightspeed-rhel9 Red Hat Ansible Automation Platform 2 Fix deferred ansible-automation-platform-27/aap-cloud-billing-rhel9 Red Hat Ansible Automation Platform 2 Fix deferred ansible-automation-platform-27/controller-rhel9 Red Hat Ansible Automation Platform 2 Fix deferred ansible-automation-platform-27/eda-controller-rhel9 Red Hat Ansible Automation Platform 2 Fix deferred ansible-automation-platform-27/gateway-rhel9 Red Hat Ansible Automation Platform 2 Fix deferred ansible-automation-platform-27/hub-rhel9 Red Hat Ansible Automation Platform 2 Fix deferred ansible-automation-platform-27/lightspeed-rhel9 Red Hat Ansible Automation Platform 2 Fix deferred ansible-automation-platform-27/metrics-service-rhel9 Red Hat Ansible Automation Platform 2 Fix deferred ansible-automation-platform/automation-dashboard-rhel9 Red Hat Ansible Automation Platform 2 Fix deferred ansible-automation-platform-tech-preview/metrics-service-rhel9 Red Hat Ansible Automation Platform 2 Fix deferred automation-controller Red Hat Discovery 2 Fix deferred discovery/discovery-server-rhel9 Red Hat Satellite 6 Fix deferred satellite/iop-advisor-backend-rhel9 Self-service automation portal 2 Fix deferred ansible-automation-platform/bootc-automation-portal-rhel9 https://www.cve.org/CVERecord?id=CVE-2026-48588 https://nvd.nist.gov/vuln/detail/CVE-2026-48588