AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-94

https://access.redhat.com/security/cve/CVE-2026-40466

https://bugzilla.redhat.com/show_bug.cgi?id=2461410

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40466.json

[{"vendor":"Red Hat","product":"Red Hat JBoss Enterprise Application Platform 7","defaultStatus":"affected","cpes":["cpe:/a:redhat:jboss_enterprise_application_platform:7"]},{"vendor":"Red Hat","product":"Red Hat AMQ Broker 7","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:amq_broker:7"]},{"vendor":"Red Hat","product":"Red Hat Data Grid 8","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:jboss_data_grid:8"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:8"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","defaultStatus":"unaffected","cpes":["cpe:/o:redhat:enterprise_linux:9"]},{"vendor":"Red Hat","product":"Red Hat Fuse 7","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:jboss_fuse:7"]},{"vendor":"Red Hat","product":"Red Hat JBoss Enterprise Application Platform 8","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:jboss_enterprise_application_platform:8"]},{"vendor":"Red Hat","product":"Red Hat JBoss Enterprise Application Platform Expansion Pack","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:jbosseapxp"]}]

{"timestamp":"2026-04-24T00:00:00+00:00","id":"CVE-2026-40466","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}

[{"vendor":"Apache Software Foundation","product":"Apache ActiveMQ Broker","defaultStatus":"unaffected","collectionURL":"https://repo.maven.apache.org/maven2","packageName":"org.apache.activemq:activemq-broker","versions":[{"version":"0","lessThan":"5.19.6","versionType":"semver","status":"affected"},{"version":"6.0.0","lessThan":"6.2.5","versionType":"semver","status":"affected"}]},{"vendor":"Apache Software Foundation","product":"Apache ActiveMQ All","defaultStatus":"unaffected","collectionURL":"https://repo.maven.apache.org/maven2","packageName":"org.apache.activemq:activemq-all","versions":[{"version":"0","lessThan":"5.19.6","versionType":"semver","status":"affected"},{"version":"6.0.0","lessThan":"6.2.5","versionType":"semver","status":"affected"}]},{"vendor":"Apache Software Foundation","product":"Apache ActiveMQ","defaultStatus":"unaffected","collectionURL":"https://repo.maven.apache.org/maven2","packageName":"org.apache.activemq:apache-activemq","versions":[{"version":"0","lessThan":"5.19.6","versionType":"semver","status":"affected"},{"version":"6.0.0","lessThan":"6.2.5","versionType":"semver","status":"affected"}]}]

OR
          *cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:* versions up to (excluding) 5.19.6
          *cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:* versions from (including) 6.0.0 up to (excluding) 6.2.5

OR
          *cpe:2.3:a:apache:activemq_broker:*:*:*:*:*:*:*:* versions up to (excluding) 5.19.6
          *cpe:2.3:a:apache:activemq_broker:*:*:*:*:*:*:*:* versions from (including) 6.0.0 up to (excluding) 6.2.5

Apache Software Foundation: https://activemq.apache.org/security-advisories.data/CVE-2026-34197-announcement.txt Types: Not Applicable

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

CWE-20

CWE-94

https://activemq.apache.org/security-advisories.data/CVE-2026-34197-announcement.txt