{"id":"CVE-2023-46695","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-46695","generatedAt":"2026-11-04T22:43:10.422Z","title":"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.","description":"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.","published":"2023-11-02T06:15:08.000Z","lastModified":"2026-06-17T06:31:23.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-770"],"affected":["djangoproject/django"],"epss":{"score":0.53447,"percentile":0.98992,"date":"2026-11-03","history":[{"date":"2026-11-02","score":0.53447,"percentile":0.9899}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 53.4%, higher than 99% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"https://docs.djangoproject.com/en/4.2/releases/security/","tags":["Patch"],"source":"cve@mitre.org"},{"url":"https://groups.google.com/forum/#%21forum/django-announce","tags":["Permissions Required"],"source":"cve@mitre.org"},{"url":"https://security.netapp.com/advisory/ntap-20231214-0001/","source":"cve@mitre.org"},{"url":"https://www.djangoproject.com/weblog/2023/nov/01/security-releases/","tags":["Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://docs.djangoproject.com/en/4.2/releases/security/","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://groups.google.com/forum/#%21forum/django-announce","tags":["Permissions Required"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20231214-0001/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.djangoproject.com/weblog/2023/nov/01/security-releases/","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-46695","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}