Bug 2493333 (CVE-2026-48928)

Summary: CVE-2026-48928 Node.js: Node.js: Trust-policy bypass due to hostname matching inconsistency
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: kaycoth, rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in Node.js. An inconsistency in how Node.js matches hostnames can be exploited by a remote attacker in multi-context mTLS (mutual Transport Layer Security) setups. This vulnerability allows for a trust-policy bypass, potentially leading to unauthorized access to sensitive information or integrity compromise within the affected system.
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2493822, 2493823, 2493824    
Bug Blocks:    

Description OSIDB Bzimport 2026-06-26 02:02:12 UTC
A inconsistency in Node.js hostname matching can cause a trust-policy bypass in multi-context mTLS setups.

This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**.

Comment 1 errata-xmlrpc 2026-07-06 04:37:05 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:35841 https://access.redhat.com/errata/RHSA-2026:35841

Comment 2 errata-xmlrpc 2026-07-06 05:16:33 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:35842 https://access.redhat.com/errata/RHSA-2026:35842

Comment 3 errata-xmlrpc 2026-07-06 14:23:50 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:35891 https://access.redhat.com/errata/RHSA-2026:35891

Comment 4 errata-xmlrpc 2026-07-06 14:45:14 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:35892 https://access.redhat.com/errata/RHSA-2026:35892

Comment 5 errata-xmlrpc 2026-07-15 11:23:36 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:39868 https://access.redhat.com/errata/RHSA-2026:39868

Comment 6 errata-xmlrpc 2026-07-20 13:07:11 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:41947 https://access.redhat.com/errata/RHSA-2026:41947