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.
{ "nvd_published_at": "2023-11-02T06:15:08Z", "cwe_ids": [ "CWE-400", "CWE-770" ], "severity": "HIGH", "github_reviewed": true, "github_reviewed_at": "2023-11-02T21:26:14Z" }