A flaw in Node.js TLS hostname handling can cause Embedded-nul hostnames can lead to silent authority rebinding due to c-string truncation in resolver bindings. This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**.

Metrics

No CVSS v4.0

No CVSS v3.1

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

No data.

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
References
Link Providers
https://nodejs.org/en/blog/vulnerability/june-2026-security-releases cve-icon
History

Fri, 26 Jun 2026 03:45:00 +0000

Type Values Removed Values Added
Title Node.js TLS Hostname Flaw Enables Authority Rebinding via Embedded NUL

Fri, 26 Jun 2026 01:30:00 +0000

Type Values Removed Values Added
Description A flaw in Node.js TLS hostname handling can cause Embedded-nul hostnames can lead to silent authority rebinding due to c-string truncation in resolver bindings. This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**.
Weaknesses CWE-284
References
Metrics cvssV3_0

{'score': 5.6, 'vector': 'CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L'}
cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published:

Updated: 2026-06-26T01:14:37.006Z

Reserved: 2026-05-26T15:00:06.427Z

Link: CVE-2026-48930

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-26T03:30:07Z