CVE-2026-25673
Potential denial-of-service vulnerability in URLField via Unicode normalization on Windows
7.5
HIGH
CVSS 3.1
EPSS 0.73%
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.
如何修補 CVE-2026-25673
要修補 CVE-2026-25673,請將受影響套件升級到下列已修補版本。
- —升級至 4.2.29 或更新版本
- —升級至 6.0.3 或更新版本
- —升級至 4.2.29 或更新版本
CVE-2026-25673 正在被利用嗎?
低 — EPSS 為 0.7%,目前沒有觀察到大規模利用活動。
受影響套件(3)
- >= 4.2.0, < 4.2.29, >= 5.2.0, < 5.2.12, >= 6.0.0, < 6.0.3
- >= 6.0, < 6.0.3
- >= 4.2, < 4.2.29, >= 5.2, < 5.2.12, >= 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 |