# CVE-2026-5680: Undertow-core: undertow: denial of service via websocket permessage-deflate processing

Status: published. Published: 2026-08-27. Updated: 2026-11-04.

A flaw was found in Undertow. A remote attacker could exploit this vulnerability by sending specially crafted WebSocket messages with permessage-deflate negotiated. This could lead to excessive memory consumption due to the PerMessageDeflateFunction.largerBuffer() method using exponential doubling, resulting in a Denial of Service (DoS) for the affected application.

## Remediation

- workaround: To mitigate this issue, configure the PerMessageDeflateHandshake to limit the maximum decompressed buffer size. This can be achieved by setting the maxDecompressedBufferSize parameter to a reasonable value (e.g., 10 MB) in the PerMessageDeflateHandshake constructor. This action may require a restart of the affected application or service to take effect. (source: CNA: redhat)

## Affected products and versions

- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1.8.GA (io.undertow/undertow-core): ≥ 2.3.26.SP3-redhat-00001; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-activemq-artemis): ≥ 0:2.40.0-8.redhat_00024.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-apache-cxf): ≥ 0:4.1.7-1.SP1_redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-artemis-wildfly-integration): ≥ 0:2.0.5-1.Final_redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-bouncycastle): ≥ 0:1.85.0-1.redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-cryptacular): ≥ 0:1.2.7-1.redhat_00002.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-eap-product-conf-parent): ≥ 0:801.8.0-1.GA_redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-hibernate): ≥ 0:6.6.54-1.Final_redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-httpcomponents-asyncclient): ≥ 0:4.1.5-5.redhat_00008.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-ironjacamar): ≥ 0:3.0.22-1.Final_redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-jackson-annotations): ≥ 0:2.18.9-1.redhat_00003.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-jackson-core): ≥ 0:2.18.9-1.redhat_00003.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-jackson-databind): ≥ 0:2.18.9-1.redhat_00003.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-jackson-dataformats-text): ≥ 0:2.18.9-1.redhat_00003.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-jackson-jaxrs-providers): ≥ 0:2.18.9-1.redhat_00003.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-jackson-modules-base): ≥ 0:2.18.9-1.redhat_00003.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-jackson-modules-java8): ≥ 0:2.18.9-1.redhat_00003.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-jakarta-xml-bind-api): ≥ 0:4.0.5-1.redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-jaxb): ≥ 0:4.0.7-4.redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-jaxbintros): ≥ 0:2.1.0-1.redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-jboss-logging): ≥ 0:3.6.3-1.Final_redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-jboss-remoting): ≥ 0:5.0.31-1.SP2_redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-jbossws-api): ≥ 0:3.1.0-1.Final_redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-jbossws-common-tools): ≥ 0:2.2.0-1.Final_redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-jbossws-cxf): ≥ 0:7.4.0-1.Final_redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-jbossws-jaxws-undertow-httpspi): ≥ 0:3.0.1-1.Final_redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-jbossws-spi): ≥ 0:5.1.0-1.Final_redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-jsf-impl): ≥ 0:4.0.11-2.SP1_redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-log4j): ≥ 0:2.25.4-1.redhat_00003.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-neethi): ≥ 0:3.2.2-1.redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-netty): ≥ 0:4.1.136-1.Final_redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-netty-transport-native-epoll): ≥ 0:4.1.136-1.Final_redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-nimbus-jose-jwt): ≥ 0:9.37.4-1.redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-parsson): ≥ 0:1.1.9-1.redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-saaj-impl): ≥ 0:3.0.6-1.redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-slf4j): ≥ 0:2.0.18-1.redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-undertow): ≥ 0:2.3.26-2.SP3_redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-wildfly): ≥ 0:8.1.8-9.GA_redhat_00006.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-wildfly-elytron): ≥ 0:2.6.11-1.Final_redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-wildfly-javadocs): ≥ 0:8.1.1-12.GA_redhat_00048.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-ws-commons-XmlSchema): ≥ 0:2.3.2-1.redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10 (eap8-xml-security): ≥ 0:3.0.6-1.redhat_00001.1.el10eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-activemq-artemis): ≥ 0:2.40.0-8.redhat_00024.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-apache-cxf): ≥ 0:4.1.7-1.SP1_redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-artemis-wildfly-integration): ≥ 0:2.0.5-1.Final_redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-bouncycastle): ≥ 0:1.85.0-1.redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-cryptacular): ≥ 0:1.2.7-1.redhat_00002.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-eap-product-conf-parent): ≥ 0:801.8.0-1.GA_redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-hibernate): ≥ 0:6.6.54-1.Final_redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-httpcomponents-asyncclient): ≥ 0:4.1.5-5.redhat_00008.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-ironjacamar): ≥ 0:3.0.22-1.Final_redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-jackson-annotations): ≥ 0:2.18.9-1.redhat_00003.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-jackson-core): ≥ 0:2.18.9-1.redhat_00003.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-jackson-databind): ≥ 0:2.18.9-1.redhat_00003.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-jackson-dataformats-text): ≥ 0:2.18.9-1.redhat_00003.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-jackson-jaxrs-providers): ≥ 0:2.18.9-1.redhat_00003.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-jackson-modules-base): ≥ 0:2.18.9-1.redhat_00003.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-jackson-modules-java8): ≥ 0:2.18.9-1.redhat_00003.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-jakarta-xml-bind-api): ≥ 0:4.0.5-1.redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-jaxb): ≥ 0:4.0.7-4.redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-jaxbintros): ≥ 0:2.1.0-1.redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-jboss-logging): ≥ 0:3.6.3-1.Final_redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-jboss-remoting): ≥ 0:5.0.31-1.SP2_redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-jbossws-api): ≥ 0:3.1.0-1.Final_redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-jbossws-common-tools): ≥ 0:2.2.0-1.Final_redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-jbossws-cxf): ≥ 0:7.4.0-1.Final_redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-jbossws-jaxws-undertow-httpspi): ≥ 0:3.0.1-1.Final_redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-jbossws-spi): ≥ 0:5.1.0-1.Final_redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-jsf-impl): ≥ 0:4.0.11-2.SP1_redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-log4j): ≥ 0:2.25.4-1.redhat_00003.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-neethi): ≥ 0:3.2.2-1.redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-netty): ≥ 0:4.1.136-1.Final_redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-netty-transport-native-epoll): ≥ 0:4.1.136-1.Final_redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-nimbus-jose-jwt): ≥ 0:9.37.4-1.redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-parsson): ≥ 0:1.1.9-1.redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-saaj-impl): ≥ 0:3.0.6-1.redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-slf4j): ≥ 0:2.0.18-1.redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-undertow): ≥ 0:2.3.26-2.SP3_redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-wildfly): ≥ 0:8.1.8-9.GA_redhat_00006.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-wildfly-elytron): ≥ 0:2.6.11-1.Final_redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-wildfly-javadocs): ≥ 0:8.1.1-12.GA_redhat_00048.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-ws-commons-XmlSchema): ≥ 0:2.3.2-1.redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 (eap8-xml-security): ≥ 0:3.0.6-1.redhat_00001.1.el8eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-activemq-artemis): ≥ 0:2.40.0-8.redhat_00024.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-apache-cxf): ≥ 0:4.1.7-1.SP1_redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-artemis-wildfly-integration): ≥ 0:2.0.5-1.Final_redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-bouncycastle): ≥ 0:1.85.0-1.redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-cryptacular): ≥ 0:1.2.7-1.redhat_00002.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-eap-product-conf-parent): ≥ 0:801.8.0-1.GA_redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-hibernate): ≥ 0:6.6.54-1.Final_redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-httpcomponents-asyncclient): ≥ 0:4.1.5-5.redhat_00008.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-ironjacamar): ≥ 0:3.0.22-1.Final_redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-jackson-annotations): ≥ 0:2.18.9-1.redhat_00003.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-jackson-core): ≥ 0:2.18.9-1.redhat_00003.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-jackson-databind): ≥ 0:2.18.9-1.redhat_00003.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-jackson-dataformats-text): ≥ 0:2.18.9-1.redhat_00003.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-jackson-jaxrs-providers): ≥ 0:2.18.9-1.redhat_00003.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-jackson-modules-base): ≥ 0:2.18.9-1.redhat_00003.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-jackson-modules-java8): ≥ 0:2.18.9-1.redhat_00003.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-jakarta-xml-bind-api): ≥ 0:4.0.5-1.redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-jaxb): ≥ 0:4.0.7-4.redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-jaxbintros): ≥ 0:2.1.0-1.redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-jboss-logging): ≥ 0:3.6.3-1.Final_redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-jboss-remoting): ≥ 0:5.0.31-1.SP2_redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-jbossws-api): ≥ 0:3.1.0-1.Final_redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-jbossws-common-tools): ≥ 0:2.2.0-1.Final_redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-jbossws-cxf): ≥ 0:7.4.0-1.Final_redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-jbossws-jaxws-undertow-httpspi): ≥ 0:3.0.1-1.Final_redhat_00001.1el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-jbossws-spi): ≥ 0:5.1.0-1.Final_redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-jsf-impl): ≥ 0:4.0.11-2.SP1_redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-log4j): ≥ 0:2.25.4-1.redhat_00003.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-neethi): ≥ 0:3.2.2-1.redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-netty): ≥ 0:4.1.136-1.Final_redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-netty-transport-native-epoll): ≥ 0:4.1.136-1.Final_redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-nimbus-jose-jwt): ≥ 0:9.37.4-1.redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-parsson): ≥ 0:1.1.9-1.redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-saaj-impl): ≥ 0:3.0.6-1.redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-slf4j): ≥ 0:2.0.18-1.redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-undertow): ≥ 0:2.3.26-2.SP3_redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-wildfly): ≥ 0:8.1.8-9.GA_redhat_00006.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-wildfly-elytron): ≥ 0:2.6.11-1.Final_redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-wildfly-javadocs): ≥ 0:8.1.1-12.GA_redhat_00048.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-ws-commons-XmlSchema): ≥ 0:2.3.2-1.redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 (eap8-xml-security): ≥ 0:3.0.6-1.redhat_00001.1.el9eap; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat build of Apache Camel for Spring Boot 4 (undertow-core): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat build of Apache Camel - HawtIO 4 (undertow-core): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Data Grid 8 (undertow-core): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 10 (moditect): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (pki-core:10.6/resteasy): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (pki-deps:10.6/resteasy): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9 (resteasy): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Fuse 7 (undertow-core): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 7 (undertow-core): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform 8 (undertow-core): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform Expansion Pack (undertow-core): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform Expansion Pack (undertow-core-2.3.10.Final.jar): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform Expansion Pack (undertow-core-2.3.18.Final.jar): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat JBoss Enterprise Application Platform Expansion Pack (undertow-core-2.3.23.SP3-redhat-00001.jar): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Process Automation 7 (undertow-core): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Single Sign-On 7 (undertow-core): Version range not reported. Source: CNA: redhat

## Severity and prioritization

- CVSS 3.1: 7.5 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H; source: CNA: redhat

- CVSS 3.1: 7.5 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H; source: NVD: secalert@redhat.com

- CISA KEV: No listing in collected sources

- EPSS: 1.10% as of 2026-11-04; percentile 65.69%

- SSVC: exploitation none; automatable yes; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-770

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://access.redhat.com/errata/RHSA-2026:70228 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:70229 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:70230 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:70277 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/security/cve/CVE-2026-5680 (CNA: redhat; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2455350 (CNA: redhat; issue-tracking, x_refsource_REDHAT)

- https://access.redhat.com/errata/RHSA-2026:70228 (secalert@redhat.com)

- https://access.redhat.com/errata/RHSA-2026:70229 (secalert@redhat.com)

- https://access.redhat.com/errata/RHSA-2026:70230 (secalert@redhat.com)

- https://access.redhat.com/errata/RHSA-2026:70277 (secalert@redhat.com)

- https://access.redhat.com/security/cve/CVE-2026-5680 (secalert@redhat.com)

- https://bugzilla.redhat.com/show_bug.cgi?id=2455350 (secalert@redhat.com)

## Provenance

- CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2026-5680; retrieved 2026-11-04; source updated 2026-11-04

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-5680; retrieved 2026-11-05; source updated 2026-11-04

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-5680; retrieved 2026-11-04; source updated Not reported

Revision: a758b6b0afdbcd5cf8e07d4d9f93b98f878df2ff63e3c93e72f134fe052d841f

Canonical: https://y2.dev/cve/CVE-2026-5680

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