Advisory severityHigh8.2Red Hat Linux

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

This high-severity Red Hat Linux advisory covers CVE-2026-101292 affecting Red Hat JBoss Enterprise Application Platform 7.4.25.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-101292 Source published Sep 28, 2026Source updated Aug 11, 2026

VulniPulse record published Sep 28, 2026

CVE-2026-101292

Affected products & platforms

Red Hat LinuxUnclassified

Open source advisory

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Summary

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 () and no-argument constructors (()) 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.

Combined Severity Note: On JBoss EAP 7.4 versions where CVE-2026-27446 is unpatched, the reflection is reachable pre-authentication (PR:N), resulting in a combined CVSS of 8.2 High (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H). JBoss EAP 7.4 is fixed in EAP 7.4.25 via RHSA-2026:53644, which includes the eap7-activemq-artemis 2.16.0-22.redhat_00057 build.

Red Hat severity: Important — CVSS 8.2 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H). Weakness: CWE-470.

Affected Red Hat products: Red Hat JBoss Enterprise Application Platform 7.4.25; Red Hat JBoss Enterprise Application Platform 7. Red Hat lists Red Hat AMQ Broker 7 as not affected.

Affected versions

< 2.34.0

Official advisory · high-confidence parse· fetched 2 days ago·verify at source

Fixed versions

org.apache.activemq/artemis-core-client:2.16.0.redhat-00057
RHSA-2026:53806

Official advisory · high-confidence parse· fetched 2 days ago·verify at source

Mitigation

Upgrade to a fixed release: org.apache.activemq/artemis-core-client:2.16.0.redhat-00057, RHSA-2026:53806. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 2 days ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Red Hat Security Data APIofficial
Official vendor source used to discover this advisory; it remains the authority for affected products and remediation. Discovered from the machine-readable feed https://access.redhat.com/hydra/rest/securitydata/cve.json; this link opens the Red Hat Linux advisory index instead of the raw feed document.
Red Hat Linux
Official vendor advisoryofficial
Official advisory page fetched and parsed; accepted detail fields are attributed to this page.
Red Hat Linux
CVE.org CNA affected-product recordCVE.org
Structured CNA affected[] data independently confirmed the affected product scope; native advisory content remains authoritative.
CVE Program

Cross-references

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CVE-2026-101292NVD CVE.org MITRE

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