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CVE-2026-48932

Quick assessment

Affected
nodejs node
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Node.js HTTP 客户端中存在的缺陷，可能导致基于 Node.js 的转发代理在从可见的 头重建出站请求头、同时将原始请求体管道传输到复用的后端连接时，出现请求不同步（desynchronization）。 Node.js 可能会将超过 / 限制的请求头从 、 和 中省略，但内部仍会使用这些被省略的头进行 HTTP 消息帧处理。具体而言， 头可能被隐藏在用户代码层（userland）之外，但请求体仍然会被正常传输。 该漏洞影响所有受支持的发布分支：Node.js 22、Node.js 24 和 Node.j

AI Predicted 5.9 Difficulty: Hard

Possible ATT&CK Techniques 1 AI

T1071.002 · File Transfer Protocols
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I. Basic Information for CVE-2026-48932

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw in Node.js HTTP client can cause a request desynchronization for Node.js-based forwarding proxies that rebuild outbound headers from the visible `IncomingMessage` headers while piping the original body to a reused backend connection. Node.js can omit headers beyond `maxHeadersCount` / `maxHeaderPairs` from `req.headers`, `req.rawHeaders`, and `req.headersDistinct`, while still using those omitted headers internally for HTTP message framing. In particular, `Content-Length` can be hidden from userland while the request body is still delivered. This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
HTTP请求的解释不一致性(HTTP请求私运)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
nodejs node 22.22.3 ~ 22.22.3 -

II. Public POCs for CVE-2026-48932

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III. Intelligence Information for CVE-2026-48932

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Vendor Advisories for CVE-2026-48932 (1)

IV. Related Vulnerabilities

Same product: node
Same vendor: nodejs
Same weakness: CWE-444

V. Comments for CVE-2026-48932

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