---
id: CVE-2026-105481
title: >-
  A flaw in Node.js HTTP Agent connection reuse can cause a client to accept as
  valid a response that was sent before the client has sent the request
summary: >-
  A flaw in Node.js HTTP Agent connection reuse can cause a client to accept as
  valid a response that was sent before the client has sent the request. This is
  an incomplete fix of CVE-2026-48931.


  The guard that destroys idle keep-alive so…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N'
cvssSource: cna
cwe:
  - CWE-367
vendor: nodejs
product: node
affected:
  - node >= 22.23.3 <= 22.23.3
  - node >= 24.22.0 <= 24.22.0
  - node >= 26.12.0 <= 26.12.0
published: '2026-10-23'
updated: '2026-10-23'
sourceUpdated: '2026-10-23T16:15:05.837Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-105481'
references:
  - url: 'https://nodejs.org/en/blog/vulnerability/october-2026-security-releases'
tags:
  - cve.org
ingestedAt: '2026-10-23T16:31:11.318Z'
---

## Overview

A flaw in Node.js HTTP Agent connection reuse can cause a client to accept as valid a response that was sent before the client has sent the request. This is an incomplete fix of CVE-2026-48931.

The guard that destroys idle keep-alive sockets when unexpected data arrives only runs when the event loop polls for I/O. If an unsolicited response has already reached the socket but has not been read yet when the socket is handed to a new request, for example because the event loop was busy with synchronous work, the guard is removed without seeing it and the data is parsed as the response to the new request.

This vulnerability affects Node.js **26.x**, **24.x**, and **22.x**.

## Affected

- `node >= 22.23.3 <= 22.23.3`
- `node >= 24.22.0 <= 24.22.0`
- `node >= 26.12.0 <= 26.12.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.