Django has a potential denial-of-service vulnerability in IPv6 validation
An issue was discovered in Django 5.1 before 5.1.5, 5.0 before 5.0.11, and 4.2 before 4.2.18. Lack of upper-bound limit enforcement in strings passed when performing IPv6 validation could lead to a potential denial-of-service attack. The undocumented and private functions `clean_ipv6_address` and `is_valid_ipv6_address` are vulnerable, as is the `django.forms.GenericIPAddressField` form field. (The django.db.models.GenericIPAddressField model field is not affected.)
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2024-56374US | high7.5 | — | ||
An issue was discovered in Django 5.1 before 5.1.5, 5.0 before 5.0.11, and 4.2 before 4.2.18. Lack of upper-bound limit enforcement in strings passed when performing IPv6 validatio… | ||||
references
External citations — patches, advisories, analysis.
- http://www.openwall.com/lists/oss-security/2025/01/14/2WEB
- https://docs.djangoproject.com/en/dev/releases/securityWEB
- https://github.com/django/djangoPACKAGE
- https://github.com/django/django/commit/4806731e58f3e8700a3c802e77899d54ac6021feWEB
- https://github.com/django/django/commit/ad866a1ca3e7d60da888d25d27e46a8adb2ed36eWEB
- https://github.com/django/django/commit/ca2be7724e1244a4cb723de40a070f873c6e94bfWEB
- https://github.com/django/django/commit/e8d4a2005955dcf962193600b53bf461b190b455WEB
- https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2025-1.yamlWEB
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