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 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

6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS 3.1

5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS

0.5% chance of exploitation in the next 30 days; higher than 41% of CVEs (scores of 2026-10-25)

CWE

CWE-789

Published

2026-10-06

Modified

2026-10-06

Record from

the NVD, synced 2026-10-19

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

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