CVE-2026-39304

{"id": "CVE-2026-39304", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-39304", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-04-10T14:10:10.616689Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}, {"type": "Secondary", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security@apache.org", "affectedData": [{"vendor": "Apache Software Foundation", "product": "Apache ActiveMQ Client", "versions": [{"status": "affected", "version": "0", "lessThan": "5.19.4", "versionType": "semver"}, {"status": "affected", "version": "6.0.0", "lessThan": "6.2.4", "versionType": "semver"}], "packageName": "org.apache.activemq:activemq-client", "collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected"}, {"vendor": "Apache Software Foundation", "product": "Apache ActiveMQ Broker", "versions": [{"status": "affected", "version": "0", "lessThan": "5.19.4", "versionType": "semver"}, {"status": "affected", "version": "6.0.0", "lessThan": "6.2.4", "versionType": "semver"}], "packageName": "org.apache.activemq:activemq-broker", "collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected"}, {"vendor": "Apache Software Foundation", "product": "Apache ActiveMQ All", "versions": [{"status": "affected", "version": "0", "lessThan": "5.19.4", "versionType": "semver"}, {"status": "affected", "version": "6.0.0", "lessThan": "6.2.4", "versionType": "semver"}], "packageName": "org.apache.activemq:activemq-all", "collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected"}, {"vendor": "Apache Software Foundation", "product": "Apache ActiveMQ", "versions": [{"status": "affected", "version": "0", "lessThan": "5.19.4", "versionType": "semver"}, {"status": "affected", "version": "6.0.0", "lessThan": "6.2.4", "versionType": "semver"}], "packageName": "org.apache.activemq:apache-activemq", "collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected"}]}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "affectedData": [{"cpes": ["cpe:/a:redhat:amq_broker:7"], "vendor": "Red Hat", "product": "Red Hat AMQ Broker 7", "packageName": "activemq-broker", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/a:redhat:amq_broker:7"], "vendor": "Red Hat", "product": "Red Hat AMQ Broker 7", "packageName": "activemq-client", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/a:redhat:camel_spring_boot:4"], "vendor": "Red Hat", "product": "Red Hat build of Apache Camel for Spring Boot 4", "packageName": "activemq-client", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/a:redhat:jboss_data_grid:8"], "vendor": "Red Hat", "product": "Red Hat Data Grid 8", "packageName": "activemq-broker", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/a:redhat:jboss_data_grid:8"], "vendor": "Red Hat", "product": "Red Hat Data Grid 8", "packageName": "activemq-client", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:8"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "packageName": "log4j:2/log4j", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:9"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "packageName": "log4j", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/a:redhat:jboss_fuse:7"], "vendor": "Red Hat", "product": "Red Hat Fuse 7", "packageName": "activemq-all", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:jboss_fuse:7"], "vendor": "Red Hat", "product": "Red Hat Fuse 7", "packageName": "activemq-broker", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:jboss_fuse:7"], "vendor": "Red Hat", "product": "Red Hat Fuse 7", "packageName": "activemq-client", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:jboss_enterprise_application_platform:7"], "vendor": "Red Hat", "product": "Red Hat JBoss Enterprise Application Platform 7", "packageName": "activemq-broker", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/a:redhat:jboss_enterprise_application_platform:7"], "vendor": "Red Hat", "product": "Red Hat JBoss Enterprise Application Platform 7", "packageName": "activemq-client", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/a:redhat:jboss_enterprise_application_platform:8"], "vendor": "Red Hat", "product": "Red Hat JBoss Enterprise Application Platform 8", "packageName": "activemq-broker", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/a:redhat:jboss_enterprise_application_platform:8"], "vendor": "Red Hat", "product": "Red Hat JBoss Enterprise Application Platform 8", "packageName": "activemq-client", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/a:redhat:jbosseapxp"], "vendor": "Red Hat", "product": "Red Hat JBoss Enterprise Application Platform Expansion Pack", "packageName": "activemq-broker", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/a:redhat:jbosseapxp"], "vendor": "Red Hat", "product": "Red Hat JBoss Enterprise Application Platform Expansion Pack", "packageName": "activemq-client", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}]}], "published": "2026-04-10T11:16:23.143", "references": [{"url": "https://activemq.apache.org/security-advisories.data/CVE-2026-39304-announcement.txt", "tags": ["Vendor Advisory"], "source": "security@apache.org"}, {"url": "http://www.openwall.com/lists/oss-security/2026/04/09/17", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://access.redhat.com/security/cve/CVE-2026-39304", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2457275", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39304.json", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-400"}]}, {"type": "Secondary", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "description": [{"lang": "en", "value": "CWE-770"}]}], "descriptions": [{"lang": "en", "value": "Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Client, Apache ActiveMQ Broker, Apache ActiveMQ.\n\nActiveMQ NIO SSL transports do not correctly handle TLSv1.3 handshake KeyUpdates triggered by clients. This makes it possible for a client to rapidly trigger updates which causes the broker to exhaust all its memory in the SSL engine leading to DoS.\n\nNote: TLS versions before TLSv1.3 (such as TLSv1.2) are broken but are not vulnerable to OOM. Previous TLS versions require a full handshake renegotiation which causes a connection to hang but not OOM. This is fixed as well.\nThis issue affects Apache ActiveMQ Client: before 5.19.4, from 6.0.0 before 6.2.4; Apache ActiveMQ Broker: before 5.19.4, from 6.0.0 before 6.2.4; Apache ActiveMQ: before 5.19.4, from 6.0.0 before 6.2.4.\n\nUsers are recommended to upgrade to version 6.2.4 or 5.19.5, which fixes the issue."}, {"lang": "es", "value": "Denegaci\u00f3n de servicio a trav\u00e9s de una vulnerabilidad de falta de memoria en Apache ActiveMQ Cliente, Apache ActiveMQ Broker, Apache ActiveMQ.\n\nLos transportes SSL NIO de ActiveMQ no manejan correctamente las actualizaciones de clave de handshake de TLSv1.3 activadas por clientes. Esto hace posible que un cliente active r\u00e1pidamente actualizaciones, lo que provoca que el broker agote toda su memoria en el motor SSL, lo que lleva a DoS.\n\nNota: Las versiones de TLS anteriores a TLSv1.3 (como TLSv1.2) est\u00e1n rotas pero no son vulnerables a OOM. Las versiones anteriores de TLS requieren una renegociaci\u00f3n completa del handshake, lo que provoca que una conexi\u00f3n se cuelgue pero no OOM. Esto tambi\u00e9n est\u00e1 solucionado.\nEste problema afecta a Apache ActiveMQ Cliente: antes de 5.19.4, desde 6.0.0 antes de 6.2.4; Apache ActiveMQ Broker: antes de 5.19.4, desde 6.0.0 antes de 6.2.4; Apache ActiveMQ: antes de 5.19.4, desde 6.0.0 antes de 6.2.4.\n\nSe recomienda a los usuarios que actualicen a la versi\u00f3n 6.2.4 o 5.19.5, lo que soluciona el problema."}], "lastModified": "2026-10-26T21:10:00.170", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "83EF7DD6-C3A9-4561-ADC0-1E6ED5429307", "versionEndExcluding": "5.19.4"}, {"criteria": "cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4BAE411E-AC4C-4BC7-88F0-06A57D2768DD", "versionEndExcluding": "6.2.4", "versionStartIncluding": "6.0.0"}, {"criteria": "cpe:2.3:a:apache:activemq_broker:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "ECEF15DD-10E8-40A4-897B-3DA7F12E2C07", "versionEndExcluding": "5.19.4"}, {"criteria": "cpe:2.3:a:apache:activemq_broker:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2C299CB9-FEA4-4CC5-B3A5-D1170BE63560", "versionEndExcluding": "6.2.4", "versionStartIncluding": "6.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@apache.org"}