eap8-activemq-artemis: Netty is a network application framework for development of protocol servers and clients
CVE-2026-55831 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.
Netty is a network application framework for development of protocol servers and clients. Prior to 4.1.136.Final and 4.2.16.Final, Netty's SPDY SETTINGS decoder accepts a peer-declared SETTINGS entry count up to the 24-bit frame-length limit and materializes every unique setting ID in `DefaultSpdySettingsFrame`, allowing a remote SPDY/3.1 peer to send a syntactically valid roughly 2 MiB SETTINGS frame that creates 262144 map entries and amplifies network input into heap growth and ordered-map insertion work. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| 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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