CVE-2026-49434
Received Received - Intake

Improper Input Validation in Apache ActiveMQ

Publication date: 2026-06-30

Last updated on: 2026-06-30

Assigner: Apache Software Foundation

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.

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Meta Information

Published
2026-06-30
Last Modified
2026-06-30
Generated
2026-06-30
AI Q&A
2026-06-30
EPSS Evaluated
N/A
NVD
CVE-2026-49434
EUVD
EUVD-2026-40285

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
apache activemq_broker From 6.0.0 (inc) to 6.2.7 (exc)
apache activemq From 6.0.0 (inc) to 6.2.7 (exc)
apache activemq_all From 6.0.0 (inc) to 6.2.7 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-20 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.

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Executive Summary

This vulnerability is an Improper Input Validation issue in Apache ActiveMQ Broker and related components. It allows an attacker who can publish or modify LDAP entries matching certain configurations to instantiate denied transports inside the broker's Java Virtual Machine (JVM). Essentially, the attacker can cause the broker to fetch a malicious URL and spawn a second BrokerService within the same JVM.

Impact Analysis

The impact of this vulnerability is that an attacker with certain LDAP access can execute unauthorized actions inside the broker JVM by spawning additional BrokerService instances. This could lead to unauthorized code execution or manipulation within the broker environment, potentially compromising the integrity and availability of the messaging service.

Mitigation Strategies

Users are recommended to upgrade Apache ActiveMQ Broker, Apache ActiveMQ, or Apache ActiveMQ All to version 6.2.7 or 5.19.8, which fixes the issue.

Compliance Impact

The provided information does not specify how this vulnerability affects compliance with common standards and regulations such as GDPR or HIPAA.

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