{"id":"CVE-2026-50750","aliases":["BIT-activemq-2026-50750","DEBIAN-CVE-2026-50750","EUVD-2026-40280","GHSA-9qj4-v6r6-3wmx","UBUNTU-CVE-2026-50750"],"status":"published","title":"Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All: Pre-authentication OpenWire DoS following fix for CVE-2026-49270","description":"Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All.\n\nFollowing the fix for  CVE-2026-49270 an unauthenticated attacker can now cause broker OOM by sending an repeated BrokerInfo commands without sending a ConnectionInfo, until the broker will crash with OOM.\nThis issue affects Apache ActiveMQ Broker: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ All: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7.\n\nUsers are recommended to upgrade to version 6.2.7, which fixes the issue.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-12","score":0.00686,"percentile":0.53114,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400"],"published":"2026-06-30T09:51:57Z","modified":"2026-11-04T16:26:03Z","fixes":[{"ecosystem":"Maven","package":"org.apache.activemq:activemq-broker","fixed_in":["5.19.8","6.2.7"],"sources":["ghsa","osv"]},{"ecosystem":"Maven","package":"org.apache.activemq:apache-activemq","fixed_in":["5.19.8","6.2.7"],"sources":["ghsa","osv"]},{"ecosystem":"Maven","package":"org.apache.activemq:activemq-all","fixed_in":["5.19.8","6.2.7"],"sources":["ghsa","osv"]},{"ecosystem":"Bitnami","package":"activemq","fixed_in":["5.19.8","6.2.7"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.apache.activemq:activemq-broker","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.19.7"},{"last_affected":"5.19.7"},{"fixed":"5.19.8"}]}],"versions":["5.19.7"]},{"source":"ghsa","ecosystem":"Maven","package":"org.apache.activemq:activemq-broker","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.2.6"},{"last_affected":"6.2.6"},{"fixed":"6.2.7"}]}],"versions":["6.2.6"]},{"source":"ghsa","ecosystem":"Maven","package":"org.apache.activemq:apache-activemq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.19.7"},{"last_affected":"5.19.7"},{"fixed":"5.19.8"}]}],"versions":["5.19.7"]},{"source":"ghsa","ecosystem":"Maven","package":"org.apache.activemq:apache-activemq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.2.6"},{"last_affected":"6.2.6"},{"fixed":"6.2.7"}]}],"versions":["6.2.6"]},{"source":"ghsa","ecosystem":"Maven","package":"org.apache.activemq:activemq-all","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.19.7"},{"last_affected":"5.19.7"},{"fixed":"5.19.8"}]}],"versions":["5.19.7"]},{"source":"ghsa","ecosystem":"Maven","package":"org.apache.activemq:activemq-all","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.2.6"},{"last_affected":"6.2.6"},{"fixed":"6.2.7"}]}],"versions":["6.2.6"]},{"source":"osv","ecosystem":"Bitnami","package":"activemq","ranges":[{"type":"SEMVER","events":[{"introduced":"5.19.7"},{"fixed":"5.19.8"},{"introduced":"6.2.6"},{"fixed":"6.2.7"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"activemq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.17.2+dfsg-2","5.17.2+dfsg-2+deb12u1","5.17.6+dfsg-1","5.17.6+dfsg-2"]},{"source":"osv","ecosystem":"Debian:13","package":"activemq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.17.6+dfsg-2"]},{"source":"osv","ecosystem":"Maven","package":"org.apache.activemq:activemq-broker","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.19.7"},{"fixed":"5.19.8"}]}],"versions":["5.19.7"]},{"source":"osv","ecosystem":"Maven","package":"org.apache.activemq:activemq-broker","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.2.6"},{"fixed":"6.2.7"}]}],"versions":["6.2.6"]},{"source":"osv","ecosystem":"Maven","package":"org.apache.activemq:apache-activemq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.19.7"},{"fixed":"5.19.8"}]}],"versions":["5.19.7"]},{"source":"osv","ecosystem":"Maven","package":"org.apache.activemq:apache-activemq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.2.6"},{"fixed":"6.2.7"}]}],"versions":["6.2.6"]},{"source":"osv","ecosystem":"Maven","package":"org.apache.activemq:activemq-all","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.19.7"},{"fixed":"5.19.8"}]}],"versions":["5.19.7"]},{"source":"osv","ecosystem":"Maven","package":"org.apache.activemq:activemq-all","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.2.6"},{"fixed":"6.2.7"}]}],"versions":["6.2.6"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"activemq","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"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"activemq","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"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"activemq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.15.10-1","5.15.11-1","5.15.11-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"activemq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.16.1-1","5.16.1-1ubuntu0.1~esm1","5.16.1-1ubuntu0.1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"activemq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.17.2+dfsg-2","5.17.6+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"activemq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.17.6+dfsg-1","5.17.6+dfsg-2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"activemq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.17.6+dfsg-2","5.17.6+dfsg-2ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"activemq","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.17.6+dfsg-2"]}],"products":[{"vendor":"apache","product":"activemq"},{"vendor":"apache","product":"activemq_broker"},{"vendor":"apache software foundation","product":"apache activemq"},{"vendor":"apache software foundation","product":"apache activemq all"},{"vendor":"apache software foundation","product":"apache activemq broker"}],"references":[{"url":"https://lists.apache.org/thread/nhkmbdym61yp6wwy0dny8w1p46sm87kr","tags":["vendor-advisory","Vendor Advisory","Mailing List","advisory","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50750","tags":["web","advisory"]},{"url":"https://github.com/apache/activemq/pull/2083","tags":["web"]},{"url":"https://github.com/apache/activemq/commit/685ab0b7a4618abd25be7d64c3355401581b69e5","tags":["web"]},{"url":"https://github.com/apache/activemq/commit/80562ea8d327b7f538de1ff7672f158fe2abc4c1","tags":["web"]},{"url":"https://github.com/apache/activemq/commit/f3a365e74e85dee6042f324156ace661e0d97f2d","tags":["web"]},{"url":"https://github.com/apache/activemq/releases/tag/activemq-5.19.8","tags":["web"]},{"url":"https://github.com/apache/activemq/releases/tag/activemq-6.2.7","tags":["web"]},{"url":"https://github.com/advisories/GHSA-9qj4-v6r6-3wmx"},{"url":"https://repo.maven.apache.org/maven2","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50750.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-50750","tags":["advisory"]},{"url":"https://github.com/apache/activemq","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2026-50750","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-50750","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-50750","title":"Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All: Pre-authentication OpenWire DoS following fix for CVE-2026-49270","description":"Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All.\n\nFollowing the fix for  CVE-2026-49270 an unauthenticated attacker can now cause broker OOM by sending an repeated BrokerInfo commands without sending a ConnectionInfo, until the broker will crash with OOM.\nThis issue affects Apache ActiveMQ Broker: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ All: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7.\n\nUsers are recommended to upgrade to version 6.2.7, which fixes the issue.","status":"published","published":"2026-06-30T09:51:57.035Z","modified":"2026-06-30T13:21:45.456Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:20:08.734143Z"}],"euvd":[{"id":"EUVD-2026-40280","description":"Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All.\n\nFollowing the fix for  CVE-2026-49270 an unauthenticated attacker can now cause broker OOM by sending an repeated BrokerInfo commands without sending a ConnectionInfo, until the broker will crash with OOM.\nThis issue affects Apache ActiveMQ Broker: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ All: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7.\n\nUsers are recommended to upgrade to version 6.2.7, which fixes the issue.","status":"published","published":"2026-06-30T09:51:57Z","modified":"2026-06-30T13:21:45Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T18:20:21.627235Z"}],"ghsa":[{"id":"GHSA-9qj4-v6r6-3wmx","title":"Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All have a Denial of Service via Out of Memory vulnerability","description":"Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All.\n\nFollowing the fix for  CVE-2026-49270 an unauthenticated attacker can now cause broker OOM by sending an repeated BrokerInfo commands without sending a ConnectionInfo, until the broker will crash with OOM.\nThis issue affects Apache ActiveMQ Broker: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ All: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7.\n\nUsers are recommended to upgrade to version 6.2.7, which fixes the issue.","status":"published","published":"2026-06-30T12:31:52Z","modified":"2026-11-04T16:07:53Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-04T16:22:20.787612Z"}],"nvd":[{"id":"CVE-2026-50750","description":"Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All.\n\nFollowing the fix for  CVE-2026-49270 an unauthenticated attacker can now cause broker OOM by sending an repeated BrokerInfo commands without sending a ConnectionInfo, until the broker will crash with OOM.\nThis issue affects Apache ActiveMQ Broker: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ All: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7.\n\nUsers are recommended to upgrade to version 6.2.7, which fixes the issue.","status":"published","published":"2026-06-30T11:16:29.933Z","modified":"2026-07-02T18:42:47.253Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:12:26.508751Z"}],"osv":[{"id":"CVE-2026-50750","title":"Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All: Pre-authentication OpenWire DoS following fix for CVE-2026-49270","description":"Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All.\n\nFollowing the fix for  CVE-2026-49270 an unauthenticated attacker can now cause broker OOM by sending an repeated BrokerInfo commands without sending a ConnectionInfo, until the broker will crash with OOM.\nThis issue affects Apache ActiveMQ Broker: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ All: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7.\n\nUsers are recommended to upgrade to version 6.2.7, which fixes the issue.","status":"published","published":"2026-06-30T09:51:57.035Z","modified":"2026-11-04T16:26:03.579683188Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-04T16:40:06.458636Z"},{"id":"DEBIAN-CVE-2026-50750","description":"Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All.  Following the fix for  CVE-2026-49270 an unauthenticated attacker can now cause broker OOM by sending an repeated BrokerInfo commands without sending a ConnectionInfo, until the broker will crash with OOM. This issue affects Apache ActiveMQ Broker: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ All: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7.  Users are recommended to upgrade to version 6.2.7, which fixes the issue.","status":"published","published":"2026-06-30T11:16:29.933Z","modified":"2026-10-01T03:03:16.563563565Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:56.877408Z"},{"id":"GHSA-9qj4-v6r6-3wmx","title":"Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All have a Denial of Service via Out of Memory vulnerability","description":"Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All.\n\nFollowing the fix for  CVE-2026-49270 an unauthenticated attacker can now cause broker OOM by sending an repeated BrokerInfo commands without sending a ConnectionInfo, until the broker will crash with OOM.\nThis issue affects Apache ActiveMQ Broker: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ All: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7.\n\nUsers are recommended to upgrade to version 6.2.7, which fixes the issue.","status":"published","published":"2026-06-30T12:31:52Z","modified":"2026-11-04T16:26:03.579683188Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-04T16:40:06.458636Z"},{"id":"UBUNTU-CVE-2026-50750","description":"Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All. Following the fix for  CVE-2026-49270 an unauthenticated attacker can now cause broker OOM by sending an repeated BrokerInfo commands without sending a ConnectionInfo, until the broker will crash with OOM. This issue affects Apache ActiveMQ Broker: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ All: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7. Users are recommended to upgrade to version 6.2.7, which fixes the issue.","status":"published","published":"2026-06-30T11:16:00Z","modified":"2026-10-17T12:58:33.308571925Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:56:33.391918Z"},{"id":"BIT-activemq-2026-50750","title":"Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All: Pre-authentication OpenWire DoS following fix for CVE-2026-49270","description":"Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All.\n\nFollowing the fix for  CVE-2026-49270 an unauthenticated attacker can now cause broker OOM by sending an repeated BrokerInfo commands without sending a ConnectionInfo, until the broker will crash with OOM.\nThis issue affects Apache ActiveMQ Broker: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ All: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7.\n\nUsers are recommended to upgrade to version 6.2.7, which fixes the issue.","status":"published","published":"2026-07-06T05:47:14.523Z","modified":"2026-11-04T16:26:03.579683188Z","updated_at":"2026-11-04T16:40:06.458636Z"}]}}