Potential denial-of-service vulnerability in get_supported_language_variant() (djangoproject Django)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.48 % · percentile 42 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- DSF
- NVD status
- Deferred
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.
Weaknesses (CWE)
- CWE-789 — Memory Allocation with Excessive Size Value
References
- https://docs.djangoproject.com/en/dev/releases/security/
- https://groups.google.com/g/django-announce
- https://github.com/django/django/commit/c88b304cc2d90fc37d3bd1f5f3829706fa6c13bc
- https://github.com/django/django/commit/7e878b0f8bd42260903e6a0d38996a93b0474a0b
- https://github.com/django/django/commit/3d32ee80ae52745d686bf94d3555000ddf073267
- https://github.com/django/django/commit/02a69e3791e3df23d45ea4ea7e7fc489f0eef2be
- https://www.djangoproject.com/weblog/2026/oct/06/security-releases/
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | DSF |
| CVSS 4.0 | MEDIUM 6.9 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N | DSF |
| CVSS 4.0 | MEDIUM 6.9 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD · 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92 (Secondary) |
| CVSS 3.1 | MEDIUM 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | NVD · 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92 (Secondary) |
European references
- ENISA EUVD · EUVD-2026-93416
- GCVE · GCVE-0-2026-77050
Affected products
| Product | Versions |
|---|---|
| djangoproject · Django | affected 6.1 < 6.1.2 ; unaffected 6.1.2 ; affected 6.0 < 6.0.9 ; unaffected 6.0.9 ; affected 5.2 < 5.2.18 ; unaffected 5.2.18 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |