{"id":"CVE-2023-46695","details":"An issue was discovered in Django 3.2 before 3.2.23, 4.1 before 4.1.13, and 4.2 before 4.2.7. The NFKC normalization is slow on Windows. As a consequence, django.contrib.auth.forms.UsernameField is subject to a potential DoS (denial of service) attack via certain inputs with a very large number of Unicode characters.","aliases":["BIT-django-2023-46695","GHSA-qmf9-6jqf-j8fq","PYSEC-2023-222"],"modified":"2026-04-12T07:21:14.692261Z","published":"2023-11-02T06:15:08Z","references":[{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20231214-0001/"},{"type":"REPORT","url":"https://groups.google.com/forum/#%21forum/django-announce"},{"type":"FIX","url":"https://docs.djangoproject.com/en/4.2/releases/security/"},{"type":"FIX","url":"https://www.djangoproject.com/weblog/2023/nov/01/security-releases/"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/django/django","events":[{"introduced":"3591e1c1acbd7c13174275367c3fdf012cb0413b"},{"fixed":"60e648a7ae033a9c2d1ab23a58402f57a1754df1"},{"introduced":"9fee86e44dd83dc968ec443adcde191b3eba1286"},{"fixed":"42591a8aeb48f3cdf7da9fd0631017dd5410525a"},{"introduced":"879e5d587b84e6fc961829611999431778eb9f6a"},{"fixed":"d254a54e7f65e83d8971bd817031bc6af32a7a46"}],"database_specific":{"extracted_events":[{"introduced":"3.2"},{"fixed":"3.2.23"},{"introduced":"4.1"},{"fixed":"4.1.13"},{"introduced":"4.2."},{"fixed":"4.2.7"}],"source":"CPE_FIELD","cpe":"cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*"}}],"versions":["4.2","4.2.1","4.2.2","4.2.3","4.2.4","4.2.5","4.2.6"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-46695.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}