CVE-2026-48618: Node.js

Medium severity, CVSS 6.5. EPSS: 3.2% chance of exploitation in the next 30 days.

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**.

Affected products

• Node.js Node.js: version 22.22.3 only; version 24.16.0 only; version 26.3.0 only

Published 2026-06-26. Last modified 2026-08-10.