# CVE-2026-48932

## Summary

- **CVE ID:** CVE-2026-48932
- **Severity:** LOW
- **CVSS Score:** 3.7 (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N)
- **CWE:** CWE-444
- **Published:** Sep 1, 2026
- **Last Modified:** Sep 1, 2026

## 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**.

## Affected Products

- nodejs — node (22.22.3)
- nodejs — node (24.16.0)
- nodejs — node (26.3.0)

## References

- [CNA](https://hackerone.com/reports/3564941)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.17%
- **EPSS Percentile:** 6.7

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-09._