# CVE-2026-15337: python-django: An issue was discovered in Django 5.2 before 5.2.17 and 6.0 before 6.0.8

CVE-2026-15337 is fixed in 2 products on 1 platform, first by SUSE-SU-2026:3503-1, released August 5, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-15337
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0059
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 4, 2026

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | python-Django opensuse-leap 16.0 | 5.2.4-bp160.11.1 | [OPENSUSE-SU-2026:21543-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21543-1.md) | Aug 6, 2026 |
| Linux | python-Django sles 15.7 | 4.2.11-150600.3.65.1 | [SUSE-SU-2026:3503-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3503-1.md) | Aug 5, 2026 |
| Linux | python-django Debian 12.15 (bookworm) | 3:3.2.25-0+deb12u4 | [DEBIAN-CVE-2026-15337](https://patchblox.com/security/data/fix/linux/debian-cve-2026-15337.md) | Aug 13, 2026 |
| Linux | python-django Debian 14 | 3:5.2.17-1 | [DEBIAN-CVE-2026-15337](https://patchblox.com/security/data/fix/linux/debian-cve-2026-15337.md) | Aug 13, 2026 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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