Potential denial-of-service vulnerability in check_for_language()
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Partial Red Hat: 9 without a fix
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-789.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| djangoproject | Django | 6.0 to before 6.0.8; 5.2 to before 5.2.17 | 6.0.8, 5.2.17 | Patch available | CNA |
- Django Vendordjangoproject Affected 6.0 to before 6.0.8; 5.2 to before 5.2.17 Fixed in 6.0.8, 5.2.17 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:* | before 5.2.17; 6.0 to before 6.0.8 | Vulnerable | djangoproject |
- cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:* Versions before 5.2.17; 6.0 to before 6.0.8 Vulnerable ·djangoproject
Remediation
- Fix · CNA Django (djangoproject) Fixed in 6.0.8, 5.2.17
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
djangoproject Django — Django security releases issued: 6.0.8 and 5.2.17
4 records Highest priority Priority MEDIUM 1 MEDIUM, 3 LOW
Other records, highest priority first
- TI-2026-12883 Server-side file-write and request forgery via spatial lookupsPriority MEDIUM 42
- TI-2026-13311 Potential denial-of-service vulnerability via nested geometry collectionsPriority LOW 39
- TI-2026-13336 Potential cross-site scripting via URLField values in the adminPriority LOW 23
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Ansible Automation Platform 2 | Affected | No fix yet: Fix deferred |
| Red Hat Discovery 2 | Affected | No fix yet: Fix deferred |
| Red Hat OpenStack Platform 16.2 | Affected | No fix planned: Out of support scope |
| Red Hat OpenStack Platform 17.1 | Affected | No fix planned: Out of support scope |
| Red Hat OpenStack Platform 18.0 | Affected | No fix yet: Fix deferred |
| Red Hat Satellite 6 | Affected | No fix yet: Fix deferred |
| Red Hat Update Infrastructure 4 for Cloud Providers | Affected | No fix planned: Out of support scope |
| Red Hat Update Infrastructure 5 | Affected | No fix yet: Fix deferred |
| Self-service automation portal 2 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-15337
- 2026-10-03 Alias added: GHSA-2f9m-qhxg-w5v5
References
Patch 5
- Django security archive
- https://github.com/django/django/commit/27137e655e442e81095f1f8f77ff3870d9fdf169
- https://github.com/django/django/commit/5b3523d29be25948e1dd90b3863a002f00fc865f
- https://github.com/django/django/commit/224dbc832586ad5cfb0237c2ff30d14baeaddc6f
- https://github.com/django/django/commit/c72a5dbb64d0777f3f471f1be94e8b2ca91e0959
More djangoproject Django vulnerabilities
- TI-2022-15177 An issue was discovered in Django 3.2 before 3.2.14 and 4.0 before 4.0.6. CVSS 3.1CRITICAL 9.8
- TI-2020-05994 Django 1.11 before 1.11.28, 2.2 before 2.2.10, and 3.0 before 3.0.3 allows SQL Injection… CVSS 3.1CRITICAL 9.8
- TI-2023-10198 An issue was discovered in the Multipart Request Parser in Django 3.2 before 3.2.18, 4.0… CVSS 3.1HIGH 7.5
- TI-2019-14306 Django before 1.11.27, 2.x before 2.2.9, and 3.x before 3.0.1 allows account takeover. CVSS 3.1CRITICAL 9.8
- TI-2019-10595 An issue was discovered in Django 1.11.x before 1.11.23, 2.1.x before 2.1.11, and 2.2.x… CVSS 3.0CRITICAL 9.8
- TI-2021-14006 Django 3.1.x before 3.1.13 and 3.2.x before 3.2.5 allows QuerySet.order_by SQL injection… CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-15337 · CVE Program
- CVE-2026-15337 · NVD
- FIRST EPSS
- GHSA-2f9m-qhxg-w5v5 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-15337 · Red Hat security data · CC BY 4.0
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