CVE-2026-48930

CRITICAL9.8

A flaw in Node

Published Jun 26, 2026

Modified 2 weeks ago

Details

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.

Affected Packages

Node.js

Windows 10 (1507)Windows 10 (1607) / Server 2016Windows 10 (1703)Windows 10 (1709)Windows 10 (1803)

References

WEB

https://nodejs.org/en/blog/vulnerability/june-2026-security-releases

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-48930

CVSS Analysis

CVSS v3.1

9.8

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Scope

UnchangedS:U

Impact

Confidentiality

HighC:H

Integrity

HighI:H

Availability

HighA:H

9.8/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

Configuration

CWE-284

Improper Access Control

Ecosystems(22)

Windows 10 (1507)Windows 10 (1607) / Server 2016 Windows 10 (1703)Windows 10 (1709)Windows 10 (1803)

Timeline

PublishedJun 26, 2026

ModifiedJun 26, 2026