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CVE-2026-50010: Netty's wrapping plain trust manager silently disables hostname verification

High · CVSS 7.5 (CVSS 3.1)EPSS 0.49%, 42th percentilePublished Updated Assigner: GitHub_M

Description

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.

Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N · CWE-347

Tracked companies

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Mapped from the CVE’s affected-product data, NVD CPE matches, vendor advisories or package feeds. A mapping means the vendor’s software is named, not that its hosted service was exposed.

Status incidents that name it

No tracked status incident names this CVE.

Affected vendors and products

netty: nettyRed Hat: Red Hat AMQ Broker 7.13.6Red Hat: Red Hat AMQ Broker 7.14.1Red Hat: Red Hat AMQ ClientsRed Hat: Red Hat Build of Apache Camel 3.33 for Quarkus 3.33.2.SP1Red Hat: Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot 3.5.16Red Hat: Red Hat build of Apache Camel 4 for Quarkus 3Red Hat: Red Hat build of Apache Camel - HawtIO 4Red Hat: Red Hat build of Apicurio Registry 3Red Hat: Red Hat build of Debezium 3Red Hat: Red Hat Build of KeycloakRed Hat: Red Hat Data Grid 8.6.2Red Hat: Red Hat Enterprise Linux AI (RHEL AI) 3Red Hat: Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7Red Hat: Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8Red Hat: Red Hat JBoss Enterprise Application Platform 8.1.7.GARed Hat: Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10Red Hat: Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8Red Hat: Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9Red Hat: Streams for Apache Kafka 2.9.4Red Hat: streams for Apache Kafka 3

References

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