CVE-2015-5963: contrib.sessions.middleware.SessionMiddleware in Django 1.8.x before 1.8.4, 1.7.x before 1.7.10, 1.4.x befo...

Security readout for executives and security teams

Older Django versions could create empty session records when the logout view was repeatedly requested. A remote attacker could use this behavior to consume session storage or remove session records, causing a denial of service. The sources identify fixed Django releases, but provide no CVSS score or confirmed active exploitation. Exposure is most likely in internet-facing applications running vulnerable Django versions and using Django's built-in session middleware and auth logout view. Systems using distributor-maintained Django packages should verify whether vendor backports from Debian, Ubuntu, Red Hat, Fedora, or openSUSE were applied. Patch during the next normal security maintenance window unless an exposed vulnerable application shows session-store pressure or availability symptoms. The risk is service disruption rather than data theft based on the supplied sources. Mitigation focus: Upgrade Django to 1.8.4, 1.7.10, 1.4.22, or later supported fixed releases.; Apply fixed Django packages from the relevant operating system vendor advisory.; Inventory applications using contrib.sessions.middleware.SessionMiddleware and contrib.auth.views.logout..

Prepared

Jun 13, 2026, 22:03 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.