CVE-2026-21710
7.5
HIGH
CVSS 3.1
EPSS 26.4%
描述
A flaw in Node.js HTTP request handling causes an uncaught `TypeError` when a request is received with a header named `__proto__` and the application accesses `req.headersDistinct`. When this occurs, `dest["__proto__"]` resolves to `Object.prototype` rather than `undefined`, causing `.push()` to be called on a non-array. This exception is thrown synchronously inside a property getter and cannot be intercepted by `error` event listeners, meaning it cannot be handled without wrapping every `req.headersDistinct` access in a `try/catch`. * This vulnerability affects all Node.js HTTP servers on **20.x, 22.x, 24.x, and v25.x**
如何修補 CVE-2026-21710
要修補 CVE-2026-21710,請將受影響套件升級到下列已修補版本。
- —升級至 20.20.2 或更新版本
- —升級至 20.20.2 或更新版本
CVE-2026-21710 正在被利用嗎?
中等 — EPSS 為 26.4%,可持續追蹤但非最高優先。
受影響套件(2)
- from 0, < 20.20.2, >= 21.0.0, < 22.22.2, >= 23.0.0, < 24.14.1, >= 25.0.0, < 25.8.2
- from 0, < 20.20.2, >= 21.0.0, < 22.22.2, >= 23.0.0, < 24.14.1, >= 25.0.0, < 25.8.2
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 |