{"id":"UBUNTU-CVE-2026-111821","details":"Improper input validation vulnerability in Apache ActiveMQ, Apache ActiveMQ KahaDB. A user can create a durable subscription with a clientId and subscription name that have a combined length \u003e 65,535 (while separately being shorter) on a broker using KahaDB which can cause the broker to shutdown and be unrecoverable. This issue affects Apache ActiveMQ: from 6.0.0 before 6.3.3, before 5.19.12; Apache ActiveMQ KahaDB: from 6.0.0 before 6.3.3, before 5.19.12. Users are recommended to upgrade to version 6.4.0, 6.3.3 or 5.19.12, which fixes the issue.","modified":"2026-11-05T11:45:50.146463847Z","published":"2026-11-04T10:17:00Z","upstream":["CVE-2026-111821"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-111821"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-111821"},{"type":"REPORT","url":"https://lists.apache.org/thread/p8gxq66lmztkrls74wkz3xh9chqd0pwl"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2026/11/03/19"}],"affected":[{"package":{"name":"activemq","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/activemq?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.6.0+dfsg1-4+deb8u1ubuntu1","5.6.0+dfsg1-5","5.13.2+dfsg-2","5.13.2+dfsg-2ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"activemq","binary_version":"5.13.2+dfsg-2ubuntu0.1~esm1"},{"binary_name":"libactivemq-java","binary_version":"5.13.2+dfsg-2ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111821.json"}},{"package":{"name":"activemq","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/activemq?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.14.5-3","5.15.2-2","5.15.3-2","5.15.8-2~18.04","5.15.8-2~18.04.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"5.15.8-2~18.04.1~esm1","binary_name":"activemq"},{"binary_name":"libactivemq-java","binary_version":"5.15.8-2~18.04.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111821.json"}},{"package":{"name":"activemq","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/activemq?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.15.10-1","5.15.11-1","5.15.11-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"activemq","binary_version":"5.15.11-1ubuntu0.1~esm1"},{"binary_name":"libactivemq-java","binary_version":"5.15.11-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111821.json"}},{"package":{"name":"activemq","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/activemq?arch=source&distro=esm-apps%2Fjammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.16.1-1","5.16.1-1ubuntu0.1~esm1","5.16.1-1ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"activemq","binary_version":"5.16.1-1ubuntu0.1"},{"binary_name":"libactivemq-java","binary_version":"5.16.1-1ubuntu0.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111821.json"}},{"package":{"name":"activemq","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/activemq?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.17.2+dfsg-2","5.17.6+dfsg-1"],"ecosystem_specific":{"binaries":[{"binary_version":"5.17.6+dfsg-1","binary_name":"activemq"},{"binary_version":"5.17.6+dfsg-1","binary_name":"libactivemq-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111821.json"}},{"package":{"name":"activemq","ecosystem":"Ubuntu:26.10","purl":"pkg:deb/ubuntu/activemq?arch=source&distro=stonking"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.17.6+dfsg-2","5.17.6+dfsg-2ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"activemq","binary_version":"5.17.6+dfsg-2ubuntu1"},{"binary_name":"libactivemq-java","binary_version":"5.17.6+dfsg-2ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111821.json"}},{"package":{"name":"activemq","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/activemq?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.17.6+dfsg-2"],"ecosystem_specific":{"binaries":[{"binary_version":"5.17.6+dfsg-2","binary_name":"activemq"},{"binary_version":"5.17.6+dfsg-2","binary_name":"libactivemq-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111821.json"}}],"schema_version":"1.9.2","severity":[{"type":"Ubuntu","score":"medium"}]}