CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE-2025-27556
High (7.5) in djangoproject django. EPSS 1.1% chance of exploitation in the next 30 days. Fixed in django 5.0.14, 5.1.8.
An issue was discovered in Django 5.1 before 5.1.8 and 5.0 before 5.0.14. The NFKC normalization is slow on Windows. As a consequence, django.contrib.auth.views.LoginView, django.contrib.auth.views.LogoutView, and django.views.i18n.set_language are subject to a potential denial-of-service attack via certain inputs with a very large number of Unicode characters.
Severity
- EPSS
- 1.1% chance of exploitation in the next 30 days; higher than 65% of CVEs (scores of 2026-10-31)
- CWE
- CWE-770
- Published
- Modified
- Record from
- the NVD, synced
Affected
- djangoproject:django
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-wqfg-m96j-85vm | PyPI | django | >=5.0 <5.0.14 | 5.0.14 |
| GHSA-wqfg-m96j-85vm | PyPI | django | >=5.1 <5.1.8 | 5.1.8 |
| PYSEC-2025-14 | PyPI | django | >=5.1 <5.1.8 >=5.0 <5.0.14 | 5.1.8, 5.0.14 |