Improper Input Validation, Improper Control of Generation of Code ('Code Injection') vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ.
An authenticated attacker may bypass the fix in CVE-2026-34197 by adding a connector using an HTTP Discovery transport via BrokerView.addNetworkConnector or BrokerView.addConnector through Jolokia if the activemq-http module is on the classpath.
A malicious HTTP endpoint can return a VM transport through the HTTP URI which will bypass the validation added in CVE-2026-34197. The attacker can then use the VM transport's brokerConfig parameter to load a remote Spring XML application context using ResourceXmlApplicationContext.
Because Spring's ResourceXmlApplicationContext instantiates all singleton beans before the BrokerService validates the configuration, arbitrary code execution occurs on the broker's JVM through bean factory methods such as Runtime.exec().
This issue affects Apache ActiveMQ Broker: before 5.19.6, from 6.0.0 before 6.2.5; Apache ActiveMQ All: before 5.19.6, from 6.0.0 before 6.2.5; Apache ActiveMQ: before 5.19.6, from 6.0.0 before 6.2.5.
Users are recommended to upgrade to version 5.19.6 or 6.2.5, which fixes the issue.
Metrics
Affected Vendors & Products
References
History
Mon, 27 Apr 2026 12:30:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Apache
Apache activemq Apache activemq Broker |
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| CPEs | cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:* cpe:2.3:a:apache:activemq_broker:*:*:*:*:*:*:*:* |
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| Vendors & Products |
Apache
Apache activemq Apache activemq Broker |
Fri, 24 Apr 2026 19:15:00 +0000
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| Metrics |
cvssV3_1
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Fri, 24 Apr 2026 10:30:00 +0000
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| Description | Improper Input Validation, Improper Control of Generation of Code ('Code Injection') vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ. An authenticated attacker may bypass the fix in CVE-2026-34197 by adding a connector using an HTTP Discovery transport via BrokerView.addNetworkConnector or BrokerView.addConnector through Jolokia if the activemq-http module is on the classpath. A malicious HTTP endpoint can return a VM transport through the HTTP URI which will bypass the validation added in CVE-2026-34197. The attacker can then use the VM transport's brokerConfig parameter to load a remote Spring XML application context using ResourceXmlApplicationContext. Because Spring's ResourceXmlApplicationContext instantiates all singleton beans before the BrokerService validates the configuration, arbitrary code execution occurs on the broker's JVM through bean factory methods such as Runtime.exec(). This issue affects Apache ActiveMQ Broker: before 5.19.6, from 6.0.0 before 6.2.5; Apache ActiveMQ All: before 5.19.6, from 6.0.0 before 6.2.5; Apache ActiveMQ: before 5.19.6, from 6.0.0 before 6.2.5. Users are recommended to upgrade to version 5.19.6 or 6.2.5, which fixes the issue. | |
| Title | Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ: Possible bypass of CVE-2026-34197 via HTTP discovery second-stage URI | |
| Weaknesses | CWE-20 CWE-94 |
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| References |
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Status: PUBLISHED
Assigner: apache
Published: 2026-04-24T10:15:44.445Z
Updated: 2026-04-28T03:55:20.119Z
Reserved: 2026-04-13T13:38:42.111Z
Link: CVE-2026-40466
Updated: 2026-04-24T18:04:42.247Z
Status : Analyzed
Published: 2026-04-24T11:16:22.540
Modified: 2026-04-27T12:23:15.880
Link: CVE-2026-40466
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