Potential denial-of-service vulnerability in HttpResponseRedirect and HttpResponsePermanentRedirect on Windows (djangoproject Django)
At a glance
- Source
- NVD
- EPSS
- EPSS 1.91 % · percentile 80 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- DSF
- NVD status
- Analyzed
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. NFKC 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. Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected. Django would like to thank Seokchan Yoon for reporting this issue.
Weaknesses (CWE)
- CWE-407 — Inefficient Algorithmic Complexity
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CISA-ADP |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary) |
Advisories
- GHSA-qw25-v68c-qjf3 — Django has a denial-of-service vulnerability in HttpResponseRedirect and HttpResponsePermanentRedirect on Windows
- PYSEC-2025-107 — An issue was discovered in 5.1 before 5.1.14, 4.2 before 4.2.26, and 5.2 before 5.2.8.
European references
- ENISA EUVD · EUVD-2025-37765
- GCVE · GCVE-0-2025-64458
Affected configurations (NVD CPE)
cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*≥ 4.2 < 4.2.26cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*≥ 5.1 < 5.1.14cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*≥ 5.2 < 5.2.8
Affected products
| Product | Versions |
|---|---|
| djangoproject · Django | affected 5.2 < 5.2.8 ; unaffected 5.2.8 ; affected 5.1 < 5.1.14 ; unaffected 5.1.14 ; affected 4.2 < 4.2.26 ; unaffected 4.2.26 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |