Vulnerability advisory

PYSEC-2026-2090

Published Jul 7, 2026Updated Aug 10, 2026OSV record ↗

Also known as BIT-django-2026-48588CVE-2026-48588GHSA-3h9f-r86x-qvjx

Severity

CVSS 3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected versions

django PyPI

Affected	Fixed in
`5.2` to before 5.2.16	`5.2.16`Advisories →
`6.0` to before 6.0.7	`6.0.7`Advisories →
Also listed as affected (23) `5.2` `5.2.1` `5.2.10` `5.2.11` `5.2.12` `5.2.13` `5.2.14` `5.2.15` `5.2.2` `5.2.3` `5.2.4` `5.2.5` `5.2.6` `5.2.7` `5.2.8` `5.2.9` `6.0` `6.0.1` `6.0.2` `6.0.3` `6.0.4` `6.0.5` `6.0.6`

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.

PYSEC-2026-2090

Affected versions

django PyPI

Description

References