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ns":["6.0.0","6.0.1","6.1.0","6.1.1","6.1.2","6.1.3","6.1.4","6.1.5","6.1.6","6.1.7","6.1.8","6.2.0","6.2.1","6.2.2","6.2.3","6.2.4","6.2.5","6.2.6"]}],"aliases":["BIT-activemq-2026-50734","CVE-2026-50734"],"database_specific":{"cwe_ids":["CWE-789"],"github_reviewed":true,"github_reviewed_at":"2026-11-04T15:59:56Z","nvd_published_at":"2026-06-30T11:16:29Z","severity":"HIGH"},"details":"An unauthenticated network attacker can cause a broker DoS by sending a crafted WireFormatInfo frame with a malicious large size value. The value is not validate and causes the broker to attempt allocation during pre-auth negotiation which can trigger OOM and crash the broker.\nThis issue affects Apache ActiveMQ Client: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ All: before 5.19.8, from 6.0.0 before 6.2.7.\n\nUsers are recommended to upgrade to version 6.2.7 or 5.19.8, which fixes the issue.","id":"GHSA-7259-vf48-52q3","modified":"2026-11-04T16:25:46.181028122Z","published":"2026-06-30T12:31:52Z","references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50734"},{"type":"WEB","url":"https://github.com/apache/activemq/pull/2080"},{"type":"WEB","url":"https://github.com/apache/activemq/commit/42e2be75eddcece3cddacf8a73e6cad7db5aa626"},{"type":"WEB","url":"https://github.com/apache/activemq/commit/6fc46e520bac7d9763ba5762cc2de603f19ed517"},{"type":"WEB","url":"https://github.com/apache/activemq/commit/e25f9b88898ef7cdfac9e855f4559a1ad0a6da12"},{"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"},{"type":"WEB","url":"https://lists.apache.org/thread/nxso951fnvf72qf9m475mpz4yf931xk0"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/06/29/10"}],"schema_version":"1.9.2","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"}],"summary":"Apache ActiveMQ Client, Apache ActiveMQ, Apache ActiveMQ All has a Memory Allocation with Excessive Size Value vulnerability"}