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.
References
Configurations
No configuration.
History
29 Sep 2026, 16:17
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28 Sep 2026, 13:17
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Information
Published : 2026-09-28 13:17
Updated : 2026-10-20 17:17
NVD link : CVE-2026-101292
Mitre link : CVE-2026-101292
CVE.ORG link : CVE-2026-101292
JSON object : View
Products Affected
No product.
CWE
CWE-470
Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')