Bug 2494843 (CVE-2026-49434) - CVE-2026-49434 org.apache.activemq/activemq-broker: org.apache.activemq/activemq-core: org.apache.activemq/activemq-all: Apache ActiveMQ: Unauthorized broker instantiation via improper input validation in LDAP entries
Summary: CVE-2026-49434 org.apache.activemq/activemq-broker: org.apache.activemq/activ...
Keywords:
Status: NEW
Alias: CVE-2026-49434
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
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Depends On: 2495064 2495066 2495068
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-30 11:02 UTC by OSIDB Bzimport
Modified: 2026-06-30 17:21 UTC (History)
56 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-06-30 11:02:20 UTC 
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.
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