Critical
activemq — security advisory
A regression has been introduced in the commit preventing JMX re-bind. By passing an empty environment map to RMIConnectorServer, instead of the map that contains the authentication credentials, it leaves ActiveMQ open to the following attack: https://docs.oracle.com/javase/8/docs/technotes/guides/management/agent.html "A remote client could create a javax.management.loading.MLet MBean and use it to create new MBeans from arbitrary URLs, at least if there is no security manager. In other words, a rogue remote client could make your Java application execute arbitrary code." Mitigation: Upgrade to Apache ActiveMQ 5.15.13
- Products
- activemq
- Affected versions
- 5.13.2+dfsg-2, 5.13.2+dfsg-2ubuntu0.1~esm1, 5.14.5-3, 5.15.10-1, 5.15.11-1, 5.15.11-1ubuntu0.1~esm1, 5.15.2-2, 5.15.3-2, 5.15.8-2~18.04, 5.15.8-2~18.04.1~esm1, 5.16.1-1, 5.16.1-1ubuntu0.1, 5.16.1-1ubuntu0.1~esm1, 5.17.2+dfsg-2, 5.17.6+dfsg-1, 5.17.6+dfsg-2, 5.17.6+dfsg-2ubuntu1, 5.6.0+dfsg1-4+deb8u1ubuntu1, 5.6.0+dfsg1-5
- Fixed versions
- Not specified
- CVEs
- CVE-2020-11998
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:37 UTC · Revision 1
Source evidence
A regression has been introduced in the commit preventing JMX re-bind. By passing an empty environment map to RMIConnectorServer, instead of the map that contains the authentication credentials, it leaves ActiveMQ open to the following attack: https://docs.oracle.com/javase/8/docs/technotes/guides/management/agent.html "A remote client could create a javax.management.loading.MLet MBean and use it to create new MBeans from arbitrary URLs, at least if there is no security manager. In other words, a rogue remote client could make your Java application execute arbitrary code." Mitigation: Upgrade to Apache ActiveMQ 5.15.13
osv:UBUNTU-CVE-2020-11998
activemq
Fixed versions: Not specified
activemq
Fixed versions: Not specified
activemq
Fixed versions: Not specified
activemq
Fixed versions: Not specified
activemq
Fixed versions: Not specified
activemq
Fixed versions: Not specified
activemq
Fixed versions: Not specified
activemq
Fixed versions: Not specified
Complete source record
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"id": "9ba96f0b5b5f3e2f4ea9be5ce3c5486ecd6b42bcf038c9aa82ef8e89c6e9e28e",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-11998",
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"title": "UBUNTU-CVE-2020-11998",
"summary": "A regression has been introduced in the commit preventing JMX re-bind. By passing an empty environment map to RMIConnectorServer, instead of the map that contains the authentication credentials, it leaves ActiveMQ open to the following attack: https://docs.oracle.com/javase/8/docs/technotes/guides/management/agent.html \"A remote client could create a javax.management.loading.MLet MBean and use it to create new MBeans from arbitrary URLs, at least if there is no security manager. In other words, a rogue remote client could make your Java application execute arbitrary code.\" Mitigation: Upgrade to Apache ActiveMQ 5.15.13",
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],
"modified": "2026-10-17T12:55:51.185779674Z",
"provider": "osv",
"upstream": [
"CVE-2020-11998"
],
"references": [
"https://ubuntu.com/security/CVE-2020-11998",
"https://www.cve.org/CVERecord?id=CVE-2020-11998"
]
},
"related_cves": [
{
"value": "CVE-2020-11998",
"evidence": "/upstream"
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],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 354160,
"published_at": "2020-09-10T19:15:00+00:00"
}