CVE-2026-6907 Potential exposure of private data due to incorrect handling of Vary: * in UpdateCacheMiddleware
Attackers can access private data because Django's cache middleware incorrectly stores responses with a wildcard Vary header.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-6907?
CVE-2026-6907 is a low-severity vulnerability in Djangoproject Django, published on 5 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
An issue was discovered in 6.0 before 6.0.5 and 5.2 before 5.2.14. `django.middleware.cache.UpdateCacheMiddleware` erroneously caches requests where the `Vary` header contained an asterisk (`'*'`). This can lead to private data being stored and served. 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 Ahmad Sadeddin for reporting this issue.
Weakness: CWE-524
Which versions are affected by CVE-2026-6907?
6 open source packages ship an affected version, including django and Django. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
django Bitnami | From 5.2.0 | 5.2.14, 6.0.5 |
django PyPI | From 5.2 | 5.2.14, 6.0.5 |
django PyPI | From 5.2 | 5.2.14 |
django PyPI | From 6.0 | 6.0.5 |
Django PyPI | From 5.2 | 5.2.14 |
Django PyPI | From 6.0 | 6.0.5 |
Products include Djangoproject Django.
How do I fix CVE-2026-6907?
Upgrade django to a fixed version for your release line: 5.2.14 or 6.0.5.
Is CVE-2026-6907 being exploited?
There is no known exploitation of CVE-2026-6907 in the wild and no public exploit code.
Other vulnerabilities in Djangoproject Django
- CVE-2026-4277 Privilege abuse in GenericInlineModelAdmin
- CVE-2024-53908 Django SQL injection in HasKey(lhs, rhs) on Oracle
- CVE-2024-42005 Django SQL injection vulnerability
- CVE-2023-31047 Django bypasses validation when using one form field to upload multiple files
- CVE-2022-34265 Django `Trunc()` and `Extract()` database functions vulnerable to SQL Injection
Sources
Also known as BIT-django-2026-6907, DEBIAN-CVE-2026-6907, ECHO-7b00-51a9-54be, GHSA-5hrc-gvxj-w55p, MINI-r6rm-rcqc-wwr9, PYSEC-2026-55 and 2 more.