cve-2026-40466

HIGH CVSS 8.8 nvd

Description

Improper Input Validation, Improper Control of Generation of Code ('Code Injection') vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ. An authenticated attacker may bypass the fix in CVE-2026-34197 by adding a connector using an HTTP Discovery transport via BrokerView.addNetworkConnector or BrokerView.addConnector through Jolokia if the activemq-http module is on the classpath. A malicious HTTP endpoint can return a VM transport through the HTTP URI which will bypass the validation added in CVE-2026-34197. The attacker can then use the VM transport's brokerConfig parameter to load a remote Spring XML application context using ResourceXmlApplicationContext. Because Spring's ResourceXmlApplicationContext instantiates all singleton beans before the BrokerService validates the configuration, arbitrary code execution occurs on the broker's JVM through bean factory methods such as Runtime.exec(). This issue affects Apache ActiveMQ Broker: before 5.19.6, from 6.0.0 before 6.2.5; Apache ActiveMQ All: before 5.19.6, from 6.0.0 before 6.2.5; Apache ActiveMQ: before 5.19.6, from 6.0.0 before 6.2.5. Users are recommended to upgrade to version 5.19.6 or 6.2.5, which fixes the issue.

Timeline

Published: 2026-04-24
Last Modified: 2026-10-26

CVSS Details

Attack Vector: NETWORK
Attack Complexity: LOW
Privileges Required: LOW

Affected Products

apache activemq
apache activemq_broker

Weaknesses (CWE)

CWE-20 CWE-94

CVSS metrics

Version	Base	Severity	Vector	Exploitability	Impact	Source
3.1	8.8	HIGH	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`	2.8	5.9	134c704f-9b21-4f2e-91b3-4a467353bcc0
3.1	8.8	HIGH	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`	2.8	5.9	0b0ca135-0b70-47e7-9f44-1890c2a1c46c

CPE configurations

CPE	Version range	Vulnerable
`cpe:2.3:a:apache:activemq::::::::`	< 5.19.6	yes
`cpe:2.3:a:apache:activemq::::::::`	>= 6.0.0, < 6.2.5	yes

CPE	Version range	Vulnerable
`cpe:2.3:a:apache:activemq_broker::::::::`	< 5.19.6	yes
`cpe:2.3:a:apache:activemq_broker::::::::`	>= 6.0.0, < 6.2.5	yes

NVD metadata

NVD status: Modified
Source identifier: security@apache.org

References

Linked Vulnerabilities

cpujul2026csaf csaf_oracle

cpumay2026csaf csaf_oracle

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}

cve-2026-40466

Raw JSON Data