CVE-2026-48588

Name	CVE-2026-48588
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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1141629

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
python-django (PTS)	bookworm	3:3.2.25-0+deb12u3	vulnerable
	bookworm (security)	3:3.2.25-0+deb12u4	vulnerable
	trixie	3:4.2.28-0+deb13u2	vulnerable
	trixie (security)	3:4.2.28-0+deb13u1	vulnerable
	forky	3:5.2.17-1	fixed
	sid	3:5.2.17-2	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
python-django	source	(unstable)	3:5.2.16-1			1141629

Notes

[trixie] - python-django <no-dsa> (Minor issue)
[bookworm] - python-django <postponed> (Minor issue)
[bullseye] - python-django <postponed> (Minor issue)
https://www.djangoproject.com/weblog/2026/jul/07/security-releases/
Fixed by: https://github.com/django/django/commit/721685aa7799cc9327bd202cd1f70bd012ca95a7 (5.2.16)