Bug 2493337 (CVE-2026-48618) - CVE-2026-48618 nodejs: Node.js: Authentication bypass due to TLS hostname handling and unicode dot separator mismatch
Summary: CVE-2026-48618 nodejs: Node.js: Authentication bypass due to TLS hostname han...
Keywords:
Status: NEW
Alias: CVE-2026-48618
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2493808 2493810 2493811
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-26 02:02 UTC by OSIDB Bzimport
Modified: 2026-06-26 22:14 UTC (History)
3 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-06-26 02:02:34 UTC 
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**.
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