CVE-2026-48618

A flaw in Node.js TLS hostname handling can cause Node.js unicode dot separator handling can lead to tls wildcard-depth authentication bypass due to resolver and verifier hostname normalization mismat. This can lead to confidentiality impact or bypass of the intended security boundary under affected configurations. This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://nodejs.org/en/blog/vulnerability/june-2026-security-releases	Patch Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:28727
https://access.redhat.com/errata/RHSA-2026:29012
https://access.redhat.com/errata/RHSA-2026:30172
https://access.redhat.com/errata/RHSA-2026:35841
https://access.redhat.com/errata/RHSA-2026:35842
https://access.redhat.com/errata/RHSA-2026:35891
https://access.redhat.com/errata/RHSA-2026:35892
https://access.redhat.com/errata/RHSA-2026:39246
https://access.redhat.com/errata/RHSA-2026:39868
https://access.redhat.com/errata/RHSA-2026:41947
https://access.redhat.com/errata/RHSA-2026:52399
https://access.redhat.com/errata/RHSA-2026:7378
https://access.redhat.com/errata/RHSA-2026:9455
https://access.redhat.com/security/cve/CVE-2026-48618
https://bugzilla.redhat.com/show_bug.cgi?id=2493337
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48618.json

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:nodejs:node.js:22.22.3::::-:::
	cpe:2.3:a:nodejs:node.js:24.16.0::::-:::
	cpe:2.3:a:nodejs:node.js:26.3.0::::-:::

History

No history.

Information

Published : 2026-06-26 02:16

Updated : 2026-08-10 13:19

NVD link : CVE-2026-48618

Mitre link : CVE-2026-48618

CVE.ORG link : CVE-2026-48618

JSON object : View

Products Affected

nodejs

node.js

CWE

CWE-176

Improper Handling of Unicode Encoding

CWE-289

Authentication Bypass by Alternate Name

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