CVE-2026-25673
HIGH7.5EPSS 0.24%Potential denial-of-service vulnerability in URLField via Unicode normalization on Windows
發布日:2026/3/3修改日:2026/4/21
描述
An issue was discovered in 6.0 before 6.0.3, 5.2 before 5.2.12, and 4.2 before 4.2.29. `URLField.to_python()` in Django calls `urllib.parse.urlsplit()`, which performs NFKC normalization on Windows that is disproportionately slow for certain Unicode characters, allowing a remote attacker to cause denial of service via large URL inputs containing these 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.
受影響套件(2)
- Bitnami/django>= 4.2.0, < 4.2.29, >= 5.2.0, < 5.2.12, >= 6.0.0, < 6.0.3
- PyPI/django>= 6.0, < 6.0.3
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
參考連結(7)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2026-25673
- PATCHhttps://github.com/django/django
- WEBhttps://docs.djangoproject.com/en/dev/releases/security
- WEBhttps://docs.djangoproject.com/en/dev/releases/security/
- WEBhttps://groups.google.com/g/django-announce
- WEBhttps://www.djangoproject.com/weblog/2026/mar/03/security-releases
- WEBhttps://www.djangoproject.com/weblog/2026/mar/03/security-releases/