Apache ActiveMQ LDAP Input Validation: Spawn Secondary Broker (5.19.7, <6.2.7)
CVE-2026-49434 Published on June 30, 2026
Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All: LdapNetworkConnector instantiates denied transports and a remote-properties broker
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.
Vulnerability Analysis
CVE-2026-49434 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, a high impact on integrity, and no impact on availability.
Weakness Type
Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
Products Associated with CVE-2026-49434
Want to know whenever a new CVE is published for Apache ActiveMQ? stack.watch will email you.
Affected Versions
Apache Software Foundation Apache ActiveMQ Broker:- Before 5.19.8 is affected.
- Version 6.0.0 and below 6.2.7 is affected.
- Before 5.19.8 is affected.
- Version 6.0.0 and below 6.2.7 is affected.
- Before 5.19.8 is affected.
- Version 6.0.0 and below 6.2.7 is affected.