CVE-2026-77050
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…
Does this matter?
Lower severity and a low EPSS score (0.48%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 4.0
- 6.9 MEDIUMCVSS: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/M
- EPSS
- 0.48% probability · 41th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-789
- Source
- 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92
EPSS moved from 0.4% on 7 October 2026 to 0.5% on 26 October 2026.
References
- https://docs.djangoproject.com/en/dev/releases/security/
- https://github.com/django/django/commit/02a69e3791e3df23d45ea4ea7e7fc489f0eef2be
- https://github.com/django/django/commit/3d32ee80ae52745d686bf94d3555000ddf073267
- https://github.com/django/django/commit/7e878b0f8bd42260903e6a0d38996a93b0474a0b
- https://github.com/django/django/commit/c88b304cc2d90fc37d3bd1f5f3829706fa6c13bc
- https://groups.google.com/g/django-announce
- https://www.djangoproject.com/weblog/2026/oct/06/security-releases/
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.