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Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, `HttpContentEncoder` (the superclass of the production handler `HttpContentCompressor`) maintains a per-channel `ArrayDeque<CharSequence>` named `acceptEncodingQueue` that accumulates attacker-controlled data without any size limit. The queue is filled on the I/O thread for every inbound HTTP request and drained only when the application later writes a non-1xx response. This creates a resource exhaustion vulnerability when an attacker exploits HTTP/1.1 pipelining to flood the connection with requests faster than the application produces responses. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Red Hat Jboss Eap | — | Upgrade Red Hat JBoss EAP to the latest version | Sep 23, 2026 | Jul 9, 2026 |
| Redhat_linux | — | Upgrade eap8-log4jUpgrade eap8-jackson-jaxrs-baseUpgrade eap8-jaxbUpgrade eap8-netty-codec-socksUpgrade eap8-netty-transport-classes-epollUpgrade eap8-activemq-artemis-serverUpgrade eap8-activemq-artemis-cliUpgrade eap8-ironjacamar-core-apiUpgrade eap8-txw2Upgrade eap8-hibernate-enversUpgrade eap8-wildfly-elytron-toolUpgrade eap8-jboss-loggingUpgrade eap8-wildfly-javadocsUpgrade eap8-nimbus-jose-jwtUpgrade eap8-jaxb-jxcUpgrade eap8-jbossws-common-toolsUpgrade eap8-saaj-implUpgrade eap8-netty-transportUpgrade eap8-jackson-module-jakarta-xmlbind-annotationsUpgrade eap8-jaxb-coreUpgrade eap8-jackson-databindUpgrade eap8-neethiUpgrade eap8-activemq-artemis-core-clientUpgrade eap8-bouncycastle-pkixUpgrade eap8-wildfly-elytronUpgrade eap8-jackson-datatype-jsr310Upgrade eap8-xml-securityUpgrade eap8-xsomUpgrade eap8-jbossws-spiUpgrade eap8-jackson-dataformats-textUpgrade eap8-apache-cxf-toolsUpgrade eap8-activemq-artemis-jakarta-service-extensionsUpgrade eap8-activemq-artemis-journalUpgrade eap8-ironjacamar-deployers-commonUpgrade eap8-netty-transport-native-unix-commonUpgrade eap8-rngomUpgrade eap8-activemq-artemis-jakarta-raUpgrade eap8-slf4j-apiUpgrade eap8-activemq-artemis-jakarta-clientUpgrade eap8-undertowUpgrade eap8-ironjacamar-common-spiUpgrade eap8-jboss-remotingUpgrade eap8-netty-codec-httpUpgrade eap8-activemq-artemis-hqclient-protocolUpgrade eap8-activemq-artemis-commonsUpgrade eap8-netty-codec-dnsUpgrade eap8-jbossws-cxfUpgrade eap8-netty-transport-native-epoll-debuginfoUpgrade eap8-activemq-artemisUpgrade eap8-apache-cxf-servicesUpgrade eap8-netty-resolverUpgrade eap8-jackson-dataformat-yamlUpgrade eap8-jaxb-runtimeUpgrade eap8-jackson-datatype-jdk8Upgrade eap8-ws-commons-XmlSchemaUpgrade eap8-jaxbintrosUpgrade eap8-httpcomponents-asyncclientUpgrade eap8-netty-handlerUpgrade eap8-jakarta-xml-bind-apiUpgrade eap8-eap-product-conf-parentUpgrade eap8-apache-cxf-rtUpgrade eap8-jbossws-jaxws-undertow-httpspiUpgrade eap8-nettyUpgrade eap8-ironjacamar-core-implUpgrade eap8-jackson-annotationsUpgrade eap8-codemodelUpgrade eap8-activemq-artemis-selectorUpgrade eap8-wildfly-modulesUpgrade eap8-bouncycastle-jmailUpgrade eap8-netty-bufferUpgrade eap8-wildfly-java-jdk21Upgrade eap8-netty-transport-native-epollUpgrade eap8-ironjacamar-validatorUpgrade eap8-ironjacamar-jdbcUpgrade eap8-ironjacamar-common-apiUpgrade eap8-artemis-wildfly-integrationUpgrade eap8-slf4jUpgrade eap8-jackson-modules-baseUpgrade eap8-ironjacamar-common-implUpgrade eap8-eap-product-conf-wildfly-ee-feature-packUpgrade eap8-netty-resolver-dnsUpgrade eap8-hibernate-coreUpgrade eap8-bouncycastle-utilUpgrade eap8-bouncycastle-provUpgrade eap8-relaxng-datatypeUpgrade eap8-netty-handler-proxyUpgrade eap8-jaxb-xjcUpgrade eap8-jsf-implUpgrade eap8-bouncycastleUpgrade eap8-activemq-artemis-dtoUpgrade eap8-parssonUpgrade eap8-activemq-artemis-hornetq-protocolUpgrade eap8-wildflyUpgrade eap8-jackson-modules-java8Upgrade eap8-jackson-jaxrs-json-providerUpgrade eap8-jbossws-apiUpgrade eap8-activemq-artemis-jakarta-serverUpgrade eap8-netty-codecUpgrade eap8-jackson-coreUpgrade eap8-cryptacularUpgrade eap8-activemq-artemis-jdbc-storeUpgrade eap8-hibernateUpgrade eap8-apache-cxfUpgrade eap8-bouncycastle-pgUpgrade eap8-netty-commonUpgrade eap8-ironjacamar | Sep 24, 2026 | Jul 9, 2026 |
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