CVE-2026-6873 Signed cookie salt namespace collision in django.http.HttpRequest.get_signed_cookie
Attackers can bypass signed cookie validation by exploiting salt namespace collisions, allowing cookie reuse across different contexts.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-6873?
CVE-2026-6873 is a low-severity vulnerability in Djangoproject Django, published on 3 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An issue was discovered in Django 6.0 before 6.0.6 and 5.2 before 5.2.15. `django.http.HttpRequest.get_signed_cookie` in Django uses a non-injective salt derivation (concatenating the cookie name and salt argument), which allows a remote attacker to use a cookie in a context different from the one where it was signed, via distinct `(name, salt)` pairs that produce the same concatenation. 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 Peng Zhou for reporting this issue.
Weakness: CWE-347
Which versions are affected by CVE-2026-6873?
6 open source packages ship an affected version, including django. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
django Bitnami | From 5.2.0 | 5.2.15, 6.0.6 |
django PyPI | All versions | 5.2.15 |
django PyPI | All versions | 5.2.15 |
django PyPI | From 5.2 | 5.2.15, 6.0.6 |
django PyPI | From 6.0.0 | 6.0.6 |
django PyPI | From 6.0.0 | 6.0.6 |
Products include Djangoproject Django.
How do I fix CVE-2026-6873?
Upgrade django to a fixed version for your release line: 5.2.15 or 6.0.6.
Is CVE-2026-6873 being exploited?
There is no known exploitation of CVE-2026-6873 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-2026-6873, DEBIAN-CVE-2026-6873, ECHO-24f0-9b34-d0ae, GHSA-h7pc-vwp9-298g, MINI-83v4-8hhc-2939, MINI-wgjg-pmvc-m9mc and 2 more.