CVE-2026-15337
Fixed in a distro release EPSS <1%CVSS 5.3
An issue was discovered in Django 5.2 before 5.2.17 and 6.0 before 6.0.8. `django.utils.translation.check_for_language()` is subject to a potential denial-of-service attack when given many distinct, very long language codes, which are retained as keys in an in-memory cache and consume process memory. Such codes reach the function through the `django.views.i18n.set_language()` view, which is not routed by default. The consumed memory is bounded, since request data is limited by the `DATA_UPLOAD_MAX_MEMORY_SIZE` setting (default 2.5 MB) and the cache holds a fixed maximum number of entries. 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 Jaeyoung Jang for reporting this issue.
Products: djangoproject django
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 12 | python-django | 3:3.2.25-0+deb12u4 |
| Debian 13 | python-django | no fix |
| Debian 14 | python-django | 3:5.2.17-1 |
| SUSE Linux Enterprise Module for Package Hub 15 SP7 | python-Django | 4.2.11-150600.3.65.1 |
| Ubuntu 22.04 LTS | python-django | no fix |
| Ubuntu 24.04 LTS | python-django | no fix |
| Ubuntu 26.04 LTS | python-django | no fix |
| Ubuntu 26.10 | python-django | no fix |
| Ubuntu Pro 14.04 LTS | python-django | no fix |
| Ubuntu Pro 16.04 LTS | python-django | no fix |
| Ubuntu Pro 18.04 LTS | python-django | no fix |
| Ubuntu Pro 20.04 LTS | python-django | no fix |
| openSUSE Leap 16.0 | python-Django | 5.2.4-bp160.11.1 |
| openSUSE Tumbleweed | python-Django | 6.0.8-1.1 |
| openSUSE Tumbleweed | python-Django4 | 4.2.30-5.1 |
| openSUSE Tumbleweed | python-Django5 | 5.2.17-1.1 |