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CVE-2026-45505 is an improper input validation and code injection vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ All, and Apache ActiveMQ. The flaw is a bypass of the earlier fix for CVE-2026-34197: non-parenthesized discovery wrappers such as masterslave and static forms are incorrectly accepted by validation logic. In vulnerable deployments, an authenticated attacker can use the Jolokia JMX-HTTP bridge exposed through the ActiveMQ web console to invoke ActiveMQ MBean operations including BrokerService.addNetworkConnector(String) and BrokerService.addConnector(String) with a crafted discovery URI. That URI can cause the VM transport's brokerConfig parameter to load a remote Spring XML application context through ResourceXmlApplicationContext. Because Spring instantiates singleton beans before BrokerService completes configuration validation, attacker-controlled bean definitions can execute code on the broker JVM. Affected versions are Apache ActiveMQ releases before 5.19.7 and 6.0.0 through before 6.2.6.
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A related Apache ActiveMQ remote code execution-related vulnerability that bypasses prior security fixes by abusing non-parenthesized discovery wrappers to load malicious remote configurations.
An Apache ActiveMQ code injection/input validation vulnerability that allows bypass of the fix for CVE-2026-34197 via improperly validated non-parenthesized discovery wrappers.
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Cross-references every affected SKU, including bundled OEM variants.
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