CVE-2026-49434: Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All: LdapNetworkConnector instantiates denied transports and a remote-properties broker

["Christopher L. Shannon" <cshannon () apache org>]

Severity: moderate 

Affected versions:

- Apache ActiveMQ Broker (org.apache.activemq:activemq-broker) before 5.19.8
- Apache ActiveMQ Broker (org.apache.activemq:activemq-broker) 6.0.0 before 6.2.7
- Apache ActiveMQ (org.apache.activemq:apache-activemq) before 5.19.8
- Apache ActiveMQ (org.apache.activemq:apache-activemq) 6.0.0 before 6.2.7
- Apache ActiveMQ All (org.apache.activemq:activemq-all) before 5.19.8
- Apache ActiveMQ All (org.apache.activemq:activemq-all) 6.0.0 before 6.2.7

Description:

Improper Input Validation vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All.

An attacker that has access to publish or modify entries in LDAP that match the configured searchBase and searchFilter 
can instantiate denied transports inside the broker JVM. This can be used to fetch an attacker URL and spawn a second 
BrokerService inside the same JVM.
This issue affects Apache ActiveMQ Broker: before 5.19.8, from 6.0.0 before 6.2.7; 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.


Users are recommended to upgrade to version 6.2.7 or 5.19.8, which fixes the issue.

Credit:

@Add Content (finder)

References:

https://activemq.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-49434