---
id: CVE-2026-48934
title: "A flaw in Node.js TLS host verification can cause an attacker to bypass certification validation.\r\n\r\nThis vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**."
summary: "A flaw in Node.js TLS host verification can cause an attacker to bypass certification validation.\r\n\r\nThis vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**."
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-295
published: '2026-06-26'
updated: '2026-06-29'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-48934'
references:
  - url: 'https://nodejs.org/en/blog/vulnerability/june-2026-security-releases'
    label: support@hackerone.com
tags:
  - nvd
epss: 0.00288
epssPercentile: 0.18988
ingestedAt: '2026-06-29T14:29:18.115Z'
---

## Overview

A flaw in Node.js TLS host verification can cause an attacker to bypass certification validation.

This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**.

## Remediation

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