{"id":"CVE-2026-86404","title":"EAP's Artemis deserialization configuration permits deserialization by default","summary":"EAP's Artemis deserialization configuration permits deserialization by default. ObjectMessage.getObject() uses ObjectInputStreamWithClassLoader, which implements allow-list/block-list filtering via its checkSecurity()/isTrustedType() met…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-502"],"vendor":"Red Hat","product":"eap7-activemq-artemis","affected":["eap7-activemq-artemis (all versions)","eap7-glassfish-jsf (all versions)","eap7-ironjacamar (all versions)","eap7-jackson-annotations (all versions)","eap7-jackson-core (all versions)","eap7-jackson-databind (all versions)","eap7-jackson-jaxrs-providers (all versions)","eap7-jackson-modules-base (all versions)","eap7-jackson-modules-java8 (all versions)","eap7-jboss-remoting (all versions)","eap7-jboss-server-migration (all versions)","eap7-netty (all versions)","eap7-netty-transport-native-epoll (all versions)","eap7-picketlink-bindings (all versions)","eap7-picketlink-federation (all versions)","eap7-undertow (all versions)","eap7-wildfly (all versions)","eap7-activemq-artemis (all versions)","eap7-glassfish-jsf (all versions)","eap7-ironjacamar (all versions)","eap7-jackson-annotations (all versions)","eap7-jackson-core (all versions)","eap7-jackson-databind (all versions)","eap7-jackson-jaxrs-providers (all versions)","eap7-jackson-modules-base (all versions)","eap7-jackson-modules-java8 (all versions)","eap7-jboss-remoting (all versions)","eap7-jboss-server-migration (all versions)","eap7-netty (all versions)","eap7-netty-transport-native-epoll (all versions)","eap7-picketlink-bindings (all versions)","eap7-picketlink-federation (all versions)","eap7-undertow (all versions)","eap7-wildfly (all versions)","eap7-activemq-artemis (all versions)","eap7-glassfish-jsf (all versions)","eap7-ironjacamar (all versions)","eap7-jackson-annotations (all versions)","eap7-jackson-core (all versions)","eap7-jackson-databind (all versions)","eap7-jackson-jaxrs-providers (all versions)","eap7-jackson-modules-base (all versions)","eap7-jackson-modules-java8 (all versions)","eap7-jboss-remoting (all versions)","eap7-jboss-server-migration (all versions)","eap7-netty (all versions)","eap7-netty-transport-native-epoll (all versions)","eap7-picketlink-bindings (all versions)","eap7-picketlink-federation (all versions)","eap7-undertow (all versions)"],"patched":["jboss_eap_7_4_els_for_rhel_7_server","jboss_eap_7_4_els_for_rhel 8","jboss_eap_7_4_els_for_rhel 9"],"published":"2026-09-07","updated":"2026-09-22","sourceUpdated":"2026-09-22T16:18:05.130","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86404","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:53644","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:53645","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:53646","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:53806","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:70228","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:70229","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:70230","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:70277","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-86404","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2477930","label":"secalert@redhat.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-86404.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-86404"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86404"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00496,"epssPercentile":0.41618,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-09T14:23:26.132092Z"},"ingestedAt":"2026-09-08T20:10:03.178Z","slug":"CVE-2026-86404","body":"## Overview\n\nEAP's Artemis deserialization configuration permits deserialization by default. ObjectMessage.getObject() uses ObjectInputStreamWithClassLoader, which implements allow-list/block-list filtering via its checkSecurity()/isTrustedType() method. However, by default both allow-list and block-list are empty. When the allow-list is empty (size == 0), isTrustedType() returns true for ALL classes. This means all classes are deserializable by default.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **RHSA-2026:53644** · Red Hat · fixed in: Red Hat JBoss EAP 7.4 ELS for RHEL 7 Server · released 2026-08-11 · [advisory](https://access.redhat.com/errata/RHSA-2026:53644)\n- **RHSA-2026:53645** · Red Hat · fixed in: Red Hat JBoss EAP 7.4 ELS for RHEL 8 · released 2026-08-11 · [advisory](https://access.redhat.com/errata/RHSA-2026:53645)\n- **RHSA-2026:53646** · Red Hat · fixed in: Red Hat JBoss EAP 7.4 ELS for RHEL 9 · released 2026-08-11 · [advisory](https://access.redhat.com/errata/RHSA-2026:53646)\n- **Red Hat VEX** · Important · affected: Red Hat JBoss Enterprise Application Platform 8 · no fix planned: Red Hat JBoss Enterprise Application Platform 8 · updated 2026-09-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-86404.json)","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}