{"id":"CVE-2026-50750","aliases":["BIT-activemq-2026-50750","GHSA-9qj4-v6r6-3wmx"],"url":"https://o3.security/vulnerability/CVE-2026-50750","summary":"Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All: Pre-authentication OpenWire DoS following fix for CVE-2026-49270","details":"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.","published":"2026-06-30T09:51:57.035Z","modified":"2026-11-04T16:26:03.579683188Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.apache.activemq:activemq-broker","fixedVersion":"5.19.8"},{"ecosystem":"Maven","name":"org.apache.activemq:activemq-broker","fixedVersion":"6.2.7"},{"ecosystem":"Maven","name":"org.apache.activemq:apache-activemq","fixedVersion":"5.19.8"},{"ecosystem":"Maven","name":"org.apache.activemq:apache-activemq","fixedVersion":"6.2.7"},{"ecosystem":"Maven","name":"org.apache.activemq:activemq-all","fixedVersion":"5.19.8"},{"ecosystem":"Maven","name":"org.apache.activemq:activemq-all","fixedVersion":"6.2.7"}],"fix":{"url":"https://github.com/apache/activemq/pull/2083","label":"apache/activemq#2083"},"references":[{"type":"WEB","url":"https://repo.maven.apache.org/maven2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50750.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/nhkmbdym61yp6wwy0dny8w1p46sm87kr"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50750"},{"type":"WEB","url":"https://github.com/apache/activemq/pull/2083"},{"type":"WEB","url":"https://github.com/apache/activemq/commit/685ab0b7a4618abd25be7d64c3355401581b69e5"},{"type":"WEB","url":"https://github.com/apache/activemq/commit/80562ea8d327b7f538de1ff7672f158fe2abc4c1"},{"type":"WEB","url":"https://github.com/apache/activemq/commit/f3a365e74e85dee6042f324156ace661e0d97f2d"},{"type":"PACKAGE","url":"https://github.com/apache/activemq"},{"type":"WEB","url":"https://github.com/apache/activemq/releases/tag/activemq-5.19.8"},{"type":"WEB","url":"https://github.com/apache/activemq/releases/tag/activemq-6.2.7"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-11-04T16:26:03.579683188Z"}}