CVE-2026-56745

eap8-activemq-artemis: Netty is a network application framework for development of protocol servers and clients

CVE-2026-56745 is fixed in 43 products on 1 platform, first by SUSE-SU-2026:3482-1, released August 4, 2026. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.5
important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0063
50th percentile

Netty is a network application framework for development of protocol servers and clients. In versions 4.2.0.Final through 4.2.15.Final and 4.1.0.Final through 4.1.135.Final, the `SpdyHttpDecoder` handler in Netty's SPDY-to-HTTP codec allocates a pooled `ByteBuf` when processing a client-initiated `SYN_STREAM` frame with `FLAG_FIN=0` and stores the partially constructed `FullHttpRequest` in `messageMap`; when the remote peer sends `RST_STREAM` for that stream or the accumulated content exceeds `maxContentLength`, the decoder removes the entry but does not release the pooled `ByteBuf`, causing native memory exhaustion. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.

Where it's fixed

ProductFixed inFixReleased
Linux
eap8-activemq-artemis · RHEL 10 2.40.0-8.redhat_00024.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-apache-cxf · RHEL 10 4.1.7-1.SP1_redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-artemis-wildfly-integration · RHEL 10 2.0.5-1.Final_redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-bouncycastle · RHEL 10 1.85.0-1.redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-cryptacular · RHEL 10 1.2.7-1.redhat_00002.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-eap-product-conf-parent · RHEL 10 801.8.0-1.GA_redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-hibernate · RHEL 10 6.6.54-1.Final_redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-httpcomponents-asyncclient · RHEL 10 4.1.5-5.redhat_00008.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-ironjacamar · RHEL 10 3.0.22-1.Final_redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-jackson-annotations · RHEL 10 2.18.9-1.redhat_00003.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-jackson-core · RHEL 10 2.18.9-1.redhat_00003.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-jackson-databind · RHEL 10 2.18.9-1.redhat_00003.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-jackson-dataformats-text · RHEL 10 2.18.9-1.redhat_00003.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-jackson-jaxrs-providers · RHEL 10 2.18.9-1.redhat_00003.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-jackson-modules-base · RHEL 10 2.18.9-1.redhat_00003.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-jackson-modules-java8 · RHEL 10 2.18.9-1.redhat_00003.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-jakarta-xml-bind-api · RHEL 10 4.0.5-1.redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-jaxb · RHEL 10 4.0.7-4.redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-jaxbintros · RHEL 10 2.1.0-1.redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-jboss-logging · RHEL 10 3.6.3-1.Final_redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-jboss-remoting · RHEL 10 5.0.31-1.SP2_redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-jbossws-api · RHEL 10 3.1.0-1.Final_redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-jbossws-common-tools · RHEL 10 2.2.0-1.Final_redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-jbossws-cxf · RHEL 10 7.4.0-1.Final_redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-jbossws-jaxws-undertow-httpspi · RHEL 10 3.0.1-1.Final_redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-jbossws-spi · RHEL 10 5.1.0-1.Final_redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-jsf-impl · RHEL 10 4.0.11-2.SP1_redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-log4j · RHEL 10 2.25.4-1.redhat_00003.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-neethi · RHEL 10 3.2.2-1.redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-netty · RHEL 10 4.1.136-1.Final_redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-netty-transport-native-epoll · RHEL 10 4.1.136-1.Final_redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-nimbus-jose-jwt · RHEL 10 9.37.4-1.redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-parsson · RHEL 10 1.1.9-1.redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-saaj-impl · RHEL 10 3.0.6-1.redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-slf4j · RHEL 10 2.0.18-1.redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-undertow · RHEL 10 2.3.26-2.SP3_redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-wildfly · RHEL 10 8.1.8-9.GA_redhat_00006.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-wildfly-elytron · RHEL 10 2.6.11-1.Final_redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-wildfly-javadocs · RHEL 10 8.1.1-12.GA_redhat_00048.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-ws-commons-XmlSchema · RHEL 10 2.3.2-1.redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
eap8-xml-security · RHEL 10 3.0.6-1.redhat_00001.1.el10eap RHSA-2026:70230 Sep 23, 2026
netty · sles 15.7 4.1.136-150200.4.53.1 SUSE-SU-2026:3482-1 Aug 4, 2026
netty-tcnative · sles 15.6 2.0.80-150200.3.48.1 SUSE-SU-2026:3482-1 Aug 4, 2026
netty-tcnative · sles 15.7 2.0.80-150200.3.48.1 SUSE-SU-2026:3482-1 Aug 4, 2026

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