Bug 2559873 (CVE-2026-106069) - CVE-2026-106069 nodejs: nodejs: TLS certificate hostname bypass via non-canonical IP hostnames
Summary: CVE-2026-106069 nodejs: nodejs: TLS certificate hostname bypass via non-canon...
Keywords:
Status: NEW
Alias: CVE-2026-106069
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: 2559943 2559945 2559953 2559956 2559947 2559950 2559958
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-23 14:11 UTC by OSIDB Bzimport
Modified: 2026-10-29 22:29 UTC (History)
5 users (show)

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

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:92376 0 None None None 2026-10-29 14:21:00 UTC
Red Hat Product Errata RHSA-2026:92378 0 None None None 2026-10-29 22:29:55 UTC

Description OSIDB Bzimport 2026-10-23 14:11:09 UTC 
A flaw was found in Node.js. Non-canonical numeric hostnames (for example 127.1 or 0127.0.0.1) can be normalized by domainToASCII() to one IPv4 address for certificate checks while the platform resolver connects to a different address. A TLS client may therefore accept a certificate that does not identify the connected peer, enabling server impersonation.
Comment 3 Jon Orris 2026-10-29 14:20:59 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 22:29:54 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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