CVE-2026-4926
path-to-regexp vulnerable to Denial of Service via sequential optional groups
7.5
HIGH
CVSS 3.1
EPSS 0.79%
描述
Impact: A bad regular expression is generated any time you have multiple sequential optional groups (curly brace syntax), such as `{a}{b}{c}:z`. The generated regex grows exponentially with the number of groups, causing denial of service. Patches: Fixed in version 8.4.0. Workarounds: Limit the number of sequential optional groups in route patterns. Avoid passing user-controlled input as route patterns.
如何修補 CVE-2026-4926
要修補 CVE-2026-4926,請將受影響套件升級到下列已修補版本。
- —未列出修補版本
- —升級至 8.4.0 或更新版本
CVE-2026-4926 正在被利用嗎?
低 — EPSS 為 0.8%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0
- >= 8.0.0, < 8.4.0
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 |