CVE-2026-21710 in Node.js

摘要 (英语)

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**

披露

2026-03-30

条目

VulDB provides additional information and datapoints for this CVE:

标识符	漏洞	CWE	可利用	对策	CVE
354143	Node.js 拒绝服务	404	未定义	官方修复	CVE-2026-21710