{"id":"UBUNTU-CVE-2026-40046","details":"Integer Overflow or Wraparound vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ MQTT. The fix for \"CVE-2025-66168: MQTT control packet remaining length field is not properly validated\" was only applied to 5.19.2 (and future 5.19.x) releases but was missed for all 6.0.0+ versions. This issue affects Apache ActiveMQ: from 6.0.0 before 6.2.4; Apache ActiveMQ All: from 6.0.0 before 6.2.4; Apache ActiveMQ MQTT: from 6.0.0 before 6.2.4. Users are recommended to upgrade to version 6.2.4 or a 5.19.x version starting with 5.19.2 or later (currently latest is 5.19.5), which fixes the issue.","modified":"2026-05-20T16:25:38.776238445Z","published":"2026-04-09T17:16:00Z","upstream":["CVE-2026-40046"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-40046"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-40046"},{"type":"REPORT","url":"https://activemq.apache.org/security-advisories.data/CVE-2026-40046-announcement.txt"},{"type":"REPORT","url":"https://lists.apache.org/thread/zdntj5rcgjjzrpow84o339lzldy68zrg"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-66168"}],"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_version":"5.13.2+dfsg-2ubuntu0.1~esm1","binary_name":"activemq"},{"binary_version":"5.13.2+dfsg-2ubuntu0.1~esm1","binary_name":"libactivemq-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40046.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_name":"activemq","binary_version":"5.15.8-2~18.04.1~esm1"},{"binary_version":"5.15.8-2~18.04.1~esm1","binary_name":"libactivemq-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40046.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-2026-40046.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-2026-40046.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_name":"activemq","binary_version":"5.17.6+dfsg-1"},{"binary_name":"libactivemq-java","binary_version":"5.17.6+dfsg-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40046.json"}},{"package":{"name":"activemq","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/activemq?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.17.6+dfsg-1","5.17.6+dfsg-2"],"ecosystem_specific":{"binaries":[{"binary_name":"activemq","binary_version":"5.17.6+dfsg-2"},{"binary_name":"libactivemq-java","binary_version":"5.17.6+dfsg-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40046.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_name":"activemq","binary_version":"5.17.6+dfsg-2"},{"binary_name":"libactivemq-java","binary_version":"5.17.6+dfsg-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40046.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}