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CVE-2026-101292— Artemis-core-client: unsafe reflection in apache activemq artemis federation message deserialization

Quick assessment

Affected
Red Hat Red Hat AMQ Broker 7
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache ActiveMQ Artemis 在 2.34.0 之前的版本中存在一个不安全的反射漏洞，位于 方法中。该方法调用 ，其中 直接从 CORE 协议的数据包缓冲区中读取，且未进行任何类型验证。经过身份验证的联邦对等节点（federation peer）可以发送一个经过构造的 数据包，携带恶意的类名，从而诱使 Broker 加载并实例化 Artemis 模块类加载器可见的任意类。在类型转换之前，类的静态初始化器（ ）和无参构造函数（ ）会作为副作用被执行，这可能导致拒绝服务（DoS）攻击，具体表现包括：通

CVSS 8.2 · High
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I. Basic Information for CVE-2026-101292

Vulnerability Information
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Vulnerability Title
Artemis-core-client: unsafe reflection in apache activemq artemis federation message deserialization
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用外部可控制的输入来选择类或代码(不安全的反射)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat AMQ Broker 7 - cpe:/a:redhat:amq_broker:7
Red Hat Red Hat JBoss Enterprise Application Platform 7 - cpe:/a:redhat:jboss_enterprise_application_platform:7

II. Public POCs for CVE-2026-101292

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III. Intelligence Information for CVE-2026-101292

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Vendor Advisories for CVE-2026-101292 (1)

Other References for CVE-2026-101292 (2)

IV. Related Vulnerabilities

Same product: Red Hat AMQ Broker 7
Same vendor: Red Hat
Same weakness: CWE-470

V. Comments for CVE-2026-101292

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