# CVE-2026-101292: Apache ActiveMQ Artemis unsafe reflection in federation

Source: https://junglewise.ai/threats/cve-2026-101292-apache-activemq-artemis-before-2-34-0-contains-an-unsafe  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-28. Updated: 2026-09-28  
License: CC BY 4.0 with a link back

CVE-2026-101292 · Severity: high · CVSS 8.2 · Published 2026-09-28

Apache ActiveMQ Artemis, a message broker used in enterprise systems, contains an unsafe reflection vulnerability that allows authenticated federation peers to load and execute arbitrary code on the broker. An attacker can send a specially crafted message to cause denial of service, memory exhaustion, or manipulate broker state by triggering uncontrolled class instantiation.

Technologies: [Apache Activemq Artemis](https://junglewise.ai/threats/technologies/activemq-artemis). Vendors: [Apache](https://junglewise.ai/threats/vendors/apache).

## Quick answers

**Is CVE-2026-101292 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-101292 being exploited in the wild.

**How severe is CVE-2026-101292?** High severity, with a CVSS score of 8.2, published 28 September 2026.

**Which products and versions are affected?** Apache Activemq Artemis before 2.34.0.

**Is there a fix for CVE-2026-101292?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-101292 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-101292?** Check whether you run Apache Activemq Artemis at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The FederationStreamConnectMessage.getFederationPolicy() method calls Class.forName().getConstructor().newInstance() on unsanitized class names received from the CORE protocol wire buffer without validation. An authenticated federation peer can exploit this by sending a FEDERATION_DOWNSTREAM_CONNECT packet with a malicious class name, causing arbitrary class loading and instantiation with static initializer and constructor side effects executing with broker privileges.

## Affected products

- Apache ActiveMQ Artemis before 2.34.0

## Timeline

- 2026-09-28: disclosed

## References

- [https://access.redhat.com/downloads/content/package-browser/](https://access.redhat.com/downloads/content/package-browser/)
- [https://access.redhat.com/jbossnetwork/restricted/listSoftware.html](https://access.redhat.com/jbossnetwork/restricted/listSoftware.html)

## Related threats

- [Apache ActiveMQ Artemis denial of service via crafted wildcard selector](https://junglewise.ai/threats/cve-2026-75880-apache-activemq-artemis-denial-of-service-via-crafted-wildcard)
- [Apache Artemis Openwire RemoveSubscriptionInfo unauthenticated queue deletion](https://junglewise.ai/threats/cve-2026-67593-apache-artemis-openwire-removesubscriptioninfo-unauthenticated)
- [Apache Artemis CORE protocol session reattach authentication bypass](https://junglewise.ai/threats/cve-2026-57967-apache-artemis-core-protocol-session-reattach-authentication)
- [Apache Artemis Java deserialization denial of service in message management](https://junglewise.ai/threats/cve-2026-57822-apache-artemis-java-deserialization-denial-of-service-in-message)
- [Apache Artemis credential exposure during cluster handshake](https://junglewise.ai/threats/cve-2026-49364-apache-artemis-credential-exposure-during-cluster-handshake)