Description
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
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
nodejs node
Default version status: unaffected
22.22.3 to ≤ 22.22.3affected24.16.0 to ≤ 24.16.0affected26.3.0 to ≤ 26.3.0affected
References
- https://nodejs.org/en/blog/vulnerability/june-2026-security-releases ↗
- 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 ↗
- https://access.redhat.com/errata/RHSA-2026:39246 ↗
- https://access.redhat.com/errata/RHSA-2026:35842 ↗
- https://access.redhat.com/errata/RHSA-2026:35841 ↗
- https://access.redhat.com/errata/RHSA-2026:41947 ↗
- https://access.redhat.com/errata/RHSA-2026:39868 ↗
- https://access.redhat.com/errata/RHSA-2026:52399 ↗
- https://access.redhat.com/errata/RHSA-2026:35892 ↗
- https://access.redhat.com/errata/RHSA-2026:35891 ↗
- https://access.redhat.com/errata/RHSA-2026:9455 ↗
- https://access.redhat.com/errata/RHSA-2026:28727 ↗
- https://access.redhat.com/errata/RHSA-2026:29012 ↗
- https://access.redhat.com/errata/RHSA-2026:7378 ↗
- https://access.redhat.com/errata/RHSA-2026:30172 ↗