{"id":"CVE-2026-53917","aliases":["GHSA-f77w-px59-cqf5"],"title":"Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Client, Apache ActiveMQ Broker have Memory Allocation with Excessive Size Value vulnerability","summary":"Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Client, Apache ActiveMQ Broker have Memory Allocation with Excessive Size Value vulnerability","severity":"high","cvss":7.5,"cwe":["CWE-789"],"vendor":"apache","product":"org.apache.activemq:apache-activemq","ecosystem":"maven","affected":["org.apache.activemq:apache-activemq < 5.19.8","org.apache.activemq:apache-activemq >= 6.0.0, < 6.2.7","org.apache.activemq:activemq-all < 5.19.8","org.apache.activemq:activemq-all >= 6.0.0, < 6.2.7","org.apache.activemq:activemq-client < 5.19.8","org.apache.activemq:activemq-client >= 6.0.0, < 6.2.7","org.apache.activemq:activemq-broker < 5.19.8","org.apache.activemq:activemq-broker >= 6.0.0, < 6.2.7"],"patched":["org.apache.activemq:apache-activemq 5.19.8","org.apache.activemq:apache-activemq 6.2.7","org.apache.activemq:activemq-all 5.19.8","org.apache.activemq:activemq-all 6.2.7","org.apache.activemq:activemq-client 5.19.8","org.apache.activemq:activemq-client 6.2.7","org.apache.activemq:activemq-broker 5.19.8","org.apache.activemq:activemq-broker 6.2.7"],"published":"2026-06-30","updated":"2026-11-04","sourceUpdated":"2026-11-04T16:10:29Z","source":"GHSA","sourceUrl":"https://github.com/advisories/GHSA-f77w-px59-cqf5","references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53917"},{"url":"https://lists.apache.org/thread/grrd1mwgkgblqjbwkkq6dvmdxd9ov2dx"},{"url":"http://www.openwall.com/lists/oss-security/2026/06/29/14"},{"url":"https://github.com/apache/activemq/pull/2136"},{"url":"https://github.com/apache/activemq/commit/78bb8dcdc32e80c8b8813b57f89147572d16a2b9"},{"url":"https://github.com/apache/activemq/commit/b20e61c7ef736a04ad07a934ea8de628550c6cf2"},{"url":"https://github.com/apache/activemq/commit/ecfd1336fa3f3f6116a78f0ab71d1b2f90bc717f"},{"url":"https://github.com/apache/activemq/releases/tag/activemq-5.19.8"},{"url":"https://github.com/apache/activemq/releases/tag/activemq-6.2.7"},{"url":"https://github.com/advisories/GHSA-f77w-px59-cqf5"}],"tags":["ghsa","maven"],"epss":0.0074,"epssPercentile":0.54728,"ingestedAt":"2026-11-04T16:18:35.576Z","slug":"CVE-2026-53917","body":"## Overview\n\nMemory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Client, Apache ActiveMQ Broker.\n\nAn authenticated user can cause a broker DoS by sending a crafted OpenWire Message with a large encoded size value for the map. OpenWire message property maps are unmarshaled without size validation which can trigger OOM and crash the broker.\nThis issue affects 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; Apache ActiveMQ Client: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ Broker: 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.\n\n## Affected packages\n\n- `org.apache.activemq:apache-activemq < 5.19.8`\n- `org.apache.activemq:apache-activemq >= 6.0.0, < 6.2.7`\n- `org.apache.activemq:activemq-all < 5.19.8`\n- `org.apache.activemq:activemq-all >= 6.0.0, < 6.2.7`\n- `org.apache.activemq:activemq-client < 5.19.8`\n- `org.apache.activemq:activemq-client >= 6.0.0, < 6.2.7`\n- `org.apache.activemq:activemq-broker < 5.19.8`\n- `org.apache.activemq:activemq-broker >= 6.0.0, < 6.2.7`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `org.apache.activemq:apache-activemq 5.19.8`\n- `org.apache.activemq:apache-activemq 6.2.7`\n- `org.apache.activemq:activemq-all 5.19.8`\n- `org.apache.activemq:activemq-all 6.2.7`\n- `org.apache.activemq:activemq-client 5.19.8`\n- `org.apache.activemq:activemq-client 6.2.7`\n- `org.apache.activemq:activemq-broker 5.19.8`\n- `org.apache.activemq:activemq-broker 6.2.7`","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}