Bug 2559870 (CVE-2026-105483) - CVE-2026-105483 nodejs: nodejs: TLS certificate hostname bypass via fullwidth-digit IP hostnames
Summary: CVE-2026-105483 nodejs: nodejs: TLS certificate hostname bypass via fullwidth...
Keywords:
Status: NEW
Alias: CVE-2026-105483
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2559951 2559946 2559948 2559954
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-23 14:10 UTC by OSIDB Bzimport
Modified: 2026-11-03 15:26 UTC (History)
6 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:92376 0 None None None 2026-10-29 14:20:58 UTC
Red Hat Product Errata RHSA-2026:92378 0 None None None 2026-10-29 22:29:57 UTC

Description OSIDB Bzimport 2026-10-23 14:10:54 UTC 
A flaw was found in Node.js. A regression in TLS IP hostname normalization allows a host written with fullwidth Unicode digits to bypass certificate hostname verification in checkServerIdentity. A TLS client can be made to accept a certificate that does not properly identify the requested IP address when connecting with such a hostname, enabling server impersonation.
Comment 3 Jon Orris 2026-10-29 14:20:57 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:92376 https://access.redhat.com/errata/RHSA-2026:92376
Comment 4 Jon Orris 2026-10-29 22:29:56 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:92378 https://access.redhat.com/errata/RHSA-2026:92378
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