{"id":"CVE-2025-64458","url":"https://www.cyber-defence.io/tools/cve/CVE-2025-64458","generatedAt":"2026-10-28T03:22:20.408Z","title":"As a consequence, `django.http.HttpResponseRedirect`, `django.http.HttpResponsePermanentRedirect`, and the shortcut `django.shortcuts.redirect` were subject to a potential denial-of-service attack via certain inputs with a very large number of Unicode…","description":"An issue was discovered in 5.1 before 5.1.14, 4.2 before 4.2.26, and 5.2 before 5.2.8.\nNFKC normalization in Python is slow on Windows. As a consequence, `django.http.HttpResponseRedirect`, `django.http.HttpResponsePermanentRedirect`, and the shortcut `django.shortcuts.redirect`  were subject to a potential  denial-of-service attack via certain inputs with a very large number of Unicode characters.\nEarlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected.\nDjango would like to thank Seokchan Yoon for reporting this issue.","published":"2025-11-05T15:15:41.000Z","lastModified":"2026-06-17T09:54:24.000Z","status":"Analyzed","sourceIdentifier":"6a34fbeb-21d4-45e7-8e0a-62b95bc12c92","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-407"],"affected":["djangoproject/django"],"epss":{"score":0.01909,"percentile":0.79635,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.91%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://docs.djangoproject.com/en/dev/releases/security/","tags":["Vendor Advisory"],"source":"6a34fbeb-21d4-45e7-8e0a-62b95bc12c92"},{"url":"https://groups.google.com/g/django-announce","tags":["Mailing List"],"source":"6a34fbeb-21d4-45e7-8e0a-62b95bc12c92"},{"url":"https://www.djangoproject.com/weblog/2025/nov/05/security-releases/","tags":["Vendor Advisory"],"source":"6a34fbeb-21d4-45e7-8e0a-62b95bc12c92"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-64458","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."}