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Artemis-core-client: unsafe reflection in apache activemq artemis federation message deserialization

Priority MEDIUM 42CWE-470Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · Low · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

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 (<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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00523 44th percentileScored 2026-11-07
Fix Fixed Red Hat: 2 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Red HatRed Hat JBoss Enterprise Application Platform 7.4.25——Not affectedCNA
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—2.16.0-22.redhat_00057.1.el7eapPatch availableCNA
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—2.3.14-11.SP11_redhat_00001.1.el7eapPatch availableCNA
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—1.5.26-2.Final_redhat_00001.1.el7eapPatch availableCNA
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—2.18.8-1.redhat_00003.1.el7eapPatch availableCNA
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—2.18.8-1.redhat_00003.1.el7eapPatch availableCNA
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—2.18.8-1.redhat_00003.1.el7eapPatch availableCNA
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—2.18.8-1.redhat_00003.1.el7eapPatch availableCNA
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—2.18.8-1.redhat_00003.1.el7eapPatch availableCNA
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—2.18.8-1.redhat_00003.1.el7eapPatch availableCNA
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—5.0.31-3.SP2_redhat_00001.1.el7eapPatch availableCNA
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—1.10.0-46.Final_redhat_00044.1.el7eapPatch availableCNA
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—4.1.135-1.Final_redhat_00001.1.el7eapPatch availableCNA
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—4.1.135-1.Final_redhat_00001.1.el7eapPatch availableCNA
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—2.5.5-30.SP12_redhat_00020.1.el7eapPatch availableCNA
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—2.5.5-24.SP12_redhat_00016.1.el7eapPatch availableCNA
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—2.2.40-2.SP3_redhat_00001.1.el7eapPatch availableCNA
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—7.4.25-2.GA_redhat_00001.1.el7eapPatch availableCNA
Red HatRed Hat AMQ Broker 7——Not affectedCNA
  • Red Hat JBoss Enterprise Application Platform 7.4.25 VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 VendorRed Hat Affected — Fixed in 2.16.0-22.redhat_00057.1.el7eap Patch available CNA
  • Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 VendorRed Hat Affected — Fixed in 2.3.14-11.SP11_redhat_00001.1.el7eap Patch available CNA
  • Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 VendorRed Hat Affected — Fixed in 1.5.26-2.Final_redhat_00001.1.el7eap Patch available CNA
  • Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 VendorRed Hat Affected — Fixed in 2.18.8-1.redhat_00003.1.el7eap Patch available CNA
  • Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 VendorRed Hat Affected — Fixed in 2.18.8-1.redhat_00003.1.el7eap Patch available CNA
  • Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 VendorRed Hat Affected — Fixed in 2.18.8-1.redhat_00003.1.el7eap Patch available CNA
  • Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 VendorRed Hat Affected — Fixed in 2.18.8-1.redhat_00003.1.el7eap Patch available CNA
  • Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 VendorRed Hat Affected — Fixed in 2.18.8-1.redhat_00003.1.el7eap Patch available CNA
  • Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 VendorRed Hat Affected — Fixed in 2.18.8-1.redhat_00003.1.el7eap Patch available CNA
  • Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 VendorRed Hat Affected — Fixed in 5.0.31-3.SP2_redhat_00001.1.el7eap Patch available CNA
  • Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 VendorRed Hat Affected — Fixed in 1.10.0-46.Final_redhat_00044.1.el7eap Patch available CNA
  • Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 VendorRed Hat Affected — Fixed in 4.1.135-1.Final_redhat_00001.1.el7eap Patch available CNA
  • Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 VendorRed Hat Affected — Fixed in 4.1.135-1.Final_redhat_00001.1.el7eap Patch available CNA
  • Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 VendorRed Hat Affected — Fixed in 2.5.5-30.SP12_redhat_00020.1.el7eap Patch available CNA
  • Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 VendorRed Hat Affected — Fixed in 2.5.5-24.SP12_redhat_00016.1.el7eap Patch available CNA
  • Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 VendorRed Hat Affected — Fixed in 2.2.40-2.SP3_redhat_00001.1.el7eap Patch available CNA
  • Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 VendorRed Hat Affected — Fixed in 7.4.25-2.GA_redhat_00001.1.el7eap Patch available CNA
  • Red Hat AMQ Broker 7 VendorRed Hat Affected — Fixed in — Not affected CNA

CPE names CNA · 3

CPEVersionsRoleVendor
cpe:/a:redhat:jboss_enterprise_application_platform:7.47.4—Red Hat
cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el77.4—Red Hat
cpe:/a:redhat:amq_broker:77—Red Hat
  • cpe:/a:redhat:jboss_enterprise_application_platform:7.4 Versions 7.4 — ·Red Hat
  • cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7 Versions 7.4 — ·Red Hat
  • cpe:/a:redhat:amq_broker:7 Versions 7 — ·Red Hat

Remediation

Red Hat 2 advisories

  • RHSA-2026:53806 Released 2026-08-11 · Red Hat rating Important
    Red Hat JBoss Enterprise Application Platform 7.4.25 security update
    • Red Hat JBoss Enterprise Application Platform 7.4.25
  • RHSA-2026:53644 Released 2026-08-11 · Red Hat rating Important
    Red Hat JBoss Enterprise Application Platform 7.4.25 security pdate
    • Red Hat JBoss EAP 7.4 ELS for RHEL 7 Server eap7-activemq-artemis-2.16.0-22.redhat_00057.1.el7eap, eap7-activemq-artemis-cli-2.16.0-22.redhat_00057.1.el7eap, eap7-activemq-artemis-commons-2.16.0-22.redhat_00057.1.el7eap +47

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat JBoss EAP 7.4 ELS for RHEL 7 ServerFixed RHSA-2026:53644
Red Hat JBoss Enterprise Application Platform 7.4.25Fixed RHSA-2026:53806
Not affected: 1 product
  • Red Hat AMQ Broker 7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-101292
  2. 2026-10-03 Alias added: GHSA-226w-4p8p-xh2w
  3. 2026-10-20 Affected versions changed · CNA
  4. 2026-10-20 Fix available: eap7-activemq-artemis@0:2.16.0-22.redhat_00057.1.el7eap, eap7-glassfish-jsf@0:2.3.14-11.SP11_redhat_00001.1.el7eap, eap7-ironjacamar@0:1.5.26-2.Final_redhat_00001.1.el7eap +14 · CNA
  5. 2026-10-21 Fix available: RHSA-2026:53644 · Red Hat
  6. 2026-10-21 Fix available: Red Hat JBoss EAP 7.4 ELS for RHEL 7 Server · Red Hat

References

  • TI-2019-15875 Protection mechanism failure in Jenkins Pipeline: Groovy Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-15874 Protection mechanism failure in Jenkins Script Security Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-05363 Code injection in Elastic Kibana KEVCVSS 3.1CRITICAL 10.0
  • TI-2019-03949 Out-of-bounds write in ESXi and Horizon DaaS KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8
See all 7413 →

Sources