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CVE-2026-101292

8.2 high SSVC exploitation: none Published
NVD · CVE.org

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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 4

  1. StatusAwaiting Analysis → PublishedNVD modified 2026-10-20 16:59
  2. StatusPublished → Awaiting AnalysisNVD modified 2026-10-20 17:17
  3. StatusAwaiting Analysis → PublishedNVD modified 2026-10-20 14:24
  4. First seenCVSS 8.2NVD modified 2026-10-20 15:17

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 4