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 3.1

6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS

3.1% chance of exploitation in the next 30 days; higher than 87% of CVEs (scores of 2026-10-25)

CWEs

CWE-176, CWE-289

Published

2026-06-26

Modified

2026-10-25

Record from

the NVD, synced 2026-10-25

Affected

• nodejs:node.js

References

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

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