Vulnerability · Published Oct 6, 2026 · Assigned by DSF
CVE-2026-77050Potential denial-of-service vulnerability in get_supported_language_variant()
Medium 5.3
In plain English
A medium-severity security flaw in Django from djangoproject. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 42% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
An issue was discovered in Django 6.1 before 6.1.2, 6.0 before 6.0.9, and 5.2 before 5.2.18. `django.utils.translation.get_supported_language_variant()` is subject to a potential denial-of-service attack when processing many distinct, very long language codes, which are retained as keys in an in-memory cache and consume process memory. Earlier, unsupported Django series (such as 5.1.x, 5.0.x, and 4.2.x) were not evaluated and may also be affected. Django would like to thank Gleb Lizunov for reporting this issue.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.24 | py3-django | 5.2.18-r0 | ALPINE-CVE-2026-77050 |
| Debian:12 | python-django | 3:3.2.25-0+deb12u6 | DEBIAN-CVE-2026-77050 |
| Debian:13 | python-django | no fix listed | DEBIAN-CVE-2026-77050 |
| Debian:14 | python-django | no fix listed | DEBIAN-CVE-2026-77050 |
| Ubuntu:22.04:LTS | python-django | no fix listed | UBUNTU-CVE-2026-77050 |
| Ubuntu:24.04:LTS | python-django | no fix listed | UBUNTU-CVE-2026-77050 |
| Ubuntu:26.04:LTS | python-django | no fix listed | UBUNTU-CVE-2026-77050 |
| Ubuntu:26.10 | python-django | no fix listed | UBUNTU-CVE-2026-77050 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| djangoproject | Django | 6.1 – before 6.1.26.0 – before 6.0.95.2 – before 5.2.18 |
Weakness: CWE-789 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
References
- Django security archive vendor-advisory
- Django releases announcements mailing-list
- https://github.com/django/django/commit/c88b304cc2d90fc37d3bd1f5f3829706fa6c13bc patch
- https://github.com/django/django/commit/7e878b0f8bd42260903e6a0d38996a93b0474a0b patch
- https://github.com/django/django/commit/3d32ee80ae52745d686bf94d3555000ddf073267 patch
- https://github.com/django/django/commit/02a69e3791e3df23d45ea4ea7e7fc489f0eef2be patch
- Django security releases issued: 6.1.2, 6.0.9, and 5.2.18 vendor-advisory