Bug 2488429 (CVE-2026-50010) - CVE-2026-50010 netty-handler: Netty: Improper trust manager handling leads to hostname verification bypass
Summary: CVE-2026-50010 netty-handler: Netty: Improper trust manager handling leads to...
Keywords:
Status: NEW
Alias: CVE-2026-50010
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:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-12 16:02 UTC by OSIDB Bzimport
Modified: 2026-08-04 17:36 UTC (History)
109 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-2026:26586 0 None None None 2026-06-17 23:05:41 UTC
Red Hat Product Errata RHSA-2026:34608 0 None None None 2026-07-02 00:04:27 UTC
Red Hat Product Errata RHSA-2026:37390 0 None None None 2026-07-09 15:29:54 UTC
Red Hat Product Errata RHSA-2026:41951 0 None None None 2026-07-20 11:57:54 UTC
Red Hat Product Errata RHSA-2026:48151 0 None None None 2026-07-29 19:55:16 UTC
Red Hat Product Errata RHSA-2026:49700 0 None None None 2026-08-03 15:41:48 UTC
Red Hat Product Errata RHSA-2026:49701 0 None None None 2026-08-03 15:41:00 UTC
Red Hat Product Errata RHSA-2026:50085 0 None None None 2026-08-04 14:00:32 UTC

Description OSIDB Bzimport 2026-06-12 16:02:36 UTC 
Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, SimpleTrustManagerFactory.engineGetTrustManagers() and related paths wrap any user-supplied plain X509TrustManager in X509TrustManagerWrapper, which extends X509ExtendedTrustManager but implements the 3-arg checkServerTrusted(chain, authType, SSLEngine) by discarding the SSLEngine and calling the 2-arg delegate. Because the object now IS an X509ExtendedTrustManager, neither SunJSSE's internal AbstractTrustManagerWrapper nor Netty's own OpenSslX509TrustManagerWrapper will re-wrap it to add endpoint-identification. Consequently, even though Netty 4.2 sets endpointIdentificationAlgorithm="HTTPS" by default, a client built with `SslContextBuilder.forClient().trustManager(somePlainX509TrustManager)` performs no hostname verification at all. Versions 4.1.135.Final and 4.2.15.Final patch the issue.
Comment 1 errata-xmlrpc 2026-06-17 23:05:40 UTC 
This issue has been addressed in the following products:

  Red Hat Build of Apache Camel 3.33 for Quarkus 3.33.2.SP1

Via RHSA-2026:26586 https://access.redhat.com/errata/RHSA-2026:26586
Comment 2 errata-xmlrpc 2026-07-02 00:04:26 UTC 
This issue has been addressed in the following products:

  Streams for Apache Kafka 2.9.4

Via RHSA-2026:34608 https://access.redhat.com/errata/RHSA-2026:34608
Comment 5 errata-xmlrpc 2026-07-09 15:29:48 UTC 
This issue has been addressed in the following products:

  Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot 3.5.16

Via RHSA-2026:37390 https://access.redhat.com/errata/RHSA-2026:37390
Comment 6 errata-xmlrpc 2026-07-20 11:57:48 UTC 
This issue has been addressed in the following products:

  Red Hat Data Grid 8.6.2

Via RHSA-2026:41951 https://access.redhat.com/errata/RHSA-2026:41951
Comment 7 errata-xmlrpc 2026-07-29 19:55:09 UTC 
This issue has been addressed in the following products:

  Cryostat 4 on RHEL 9

Via RHSA-2026:48151 https://access.redhat.com/errata/RHSA-2026:48151
Comment 8 errata-xmlrpc 2026-08-03 15:40:54 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Enterprise Application Platform 8.1

Via RHSA-2026:49701 https://access.redhat.com/errata/RHSA-2026:49701
Comment 9 errata-xmlrpc 2026-08-03 15:41:43 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9
  Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8
  Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10

Via RHSA-2026:49700 https://access.redhat.com/errata/RHSA-2026:49700
Comment 10 errata-xmlrpc 2026-08-04 14:00:25 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Enterprise Application Platform 8.1

Via RHSA-2026:50085 https://access.redhat.com/errata/RHSA-2026:50085
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