CVE-2026-101292
HighCVSS 8.2Exploitation Probability (EPSS)
Low risk33th percentile - higher than 33% of all known CVEs
Summary
Apache ActiveMQ Artemis before 2.34.0 contains an unsafe reflection vulnerability in FederationStreamConnectMessage.getFederationPolicy(). An authenticated federation peer can send a FEDERATION_DOWNSTREAM_CONNECT packet with a crafted class name, causing the broker to load and instantiate arbitrary classes visible to the Artemis module classloader.
Risk Assessment
This can lead to denial of service via system-property poisoning, out-of-memory conditions via classloading, or broker state manipulation.
Recommendation
Update Apache ActiveMQ Artemis to version 2.34.0 or later to fix the unsafe reflection vulnerability.
Other vulnerabilities in Apache ActiveMQ Artemis
See all- CVE-2023-50780High
Apache ActiveMQ Artemis before version 2.29.0 allows access to diagnostic information and controls through MBeans, including the Log4J2 MBean, which is not meant for exposure to non-administrative users. This could allow an authenticated attacker to write arbitrary files to the filesystem and indirectly achieve RCE.
- CVE-2016-4978High
The getObject method of the javax.jms.ObjectMessage class in Apache ActiveMQ Artemis before version 1.4.0 may allow remote authenticated users with permission to send messages to the Artemis broker to deserialize arbitrary objects and execute arbitrary code.
- CVE-2025-27391Medium
The vulnerability in Apache ActiveMQ Artemis involves the insertion of sensitive information into the log file. All broker property values are logged when the org.apache.activemq.artemis.core.config.impl.ConfigurationImpl logger has debug level enabled.
- CVE-2025-27427Medium
A vulnerability exists in Apache ActiveMQ Artemis that allows a user with permissions to create queues to modify the routing type of an address, even if they do not have permission to create that address. This could lead to sending messages with a routing type not supported by the address.
- CVE-2022-35278Medium
In Apache ActiveMQ Artemis prior to version 2.24.0, an attacker could show malicious content and/or redirect users to a malicious URL in the web console by using HTML in the name of an address or queue.
- CVE-2022-23913High
In Apache ActiveMQ Artemis prior to 2.20.0 or 2.19.1, an attacker could partially disrupt availability (DoS) through uncontrolled resource consumption of memory.
- CVE-2021-26118High
In the OpenWire protocol of Apache ActiveMQ Artemis 2.15.0, a vulnerability was found that allowed bypassing policy-based access control when creating advisory messages for the entire session. The production of these messages was not subject to access control in error.
- CVE-2020-13932Medium
In Apache ActiveMQ Artemis versions 2.5.0 to 2.13.0, there is an XSS vulnerability that can be exploited through a specially crafted MQTT packet containing an XSS payload in the client-id or topic name. The XSS payload is injected into the admin console's browser.
Original NVD description (English source)
Apache ActiveMQ Artemis before 2.34.0 contains an unsafe reflection vulnerability in FederationStreamConnectMessage.getFederationPolicy(). The method calls Class.forName(clazz).getConstructor().newInstance() where clazz is read directly from the CORE protocol wire buffer without type validation. An authenticated federation peer can send a FEDERATION_DOWNSTREAM_CONNECT packet with a crafted class name, causing the broker to load and instantiate arbitrary classes visible to the Artemis module classloader. Static initializers (<clinit>) and no-argument constructors (<init>()) execute as side effects before the type cast, enabling denial of service via system-property poisoning, out-of-memory conditions via classloading, or broker state manipulation.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS