CVE-2026-48618
Medium
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**.
SeverityMedium
CVSS6.5
Exploit probability—
Product
Nodejs Node.js
PublishedJun 26, 2026
First seenJun 26, 2026
Weakness typeCWE-176CWE-176
How to fix
Vendor advisories
- access.redhat.com/errata/RHSA-2026:39246
- access.redhat.com/errata/RHSA-2026:35842
- access.redhat.com/errata/RHSA-2026:35841
- access.redhat.com/errata/RHSA-2026:41947
- access.redhat.com/errata/RHSA-2026:39868
- access.redhat.com/errata/RHSA-2026:52399
- access.redhat.com/errata/RHSA-2026:35892
- access.redhat.com/errata/RHSA-2026:35891
- access.redhat.com/errata/RHSA-2026:9455
- access.redhat.com/errata/RHSA-2026:28727
- access.redhat.com/errata/RHSA-2026:29012
- access.redhat.com/errata/RHSA-2026:7378
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| nodejs node.js | 22.22.3, 24.16.0, 26.3.0 | — |
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