CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE-2025-64458
High (7.5) in djangoproject django. EPSS 1.9% chance of exploitation in the next 30 days. Fixed in django 4.2.26, 5.1.14, 5.2.8.
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.
Severity
- EPSS
- 1.9% chance of exploitation in the next 30 days; higher than 79% of CVEs (scores of 2026-10-31)
- CWE
- CWE-407
- Published
- Modified
- Record from
- the NVD, synced
Affected
- djangoproject:django
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-qw25-v68c-qjf3 | PyPI | django | >=5.2a1 <5.2.8 | 5.2.8 |
| GHSA-qw25-v68c-qjf3 | PyPI | django | >=5.0a1 <5.1.14 | 5.1.14 |
| GHSA-qw25-v68c-qjf3 | PyPI | django | <4.2.26 | 4.2.26 |
| PYSEC-2025-107 | PyPI | django | >=4.2 <4.2.26 >=5.1 <5.1.14 >=5.2 <5.2.8 | 4.2.26, 5.1.14, 5.2.8 |