It was found that when Artemis and HornetQ before 2.4.0 are configured with UDP discovery and JGroups discovery a huge byte array is created

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• apache artemisbefore 2.4.0
• redhat hornetqbefore 2.4.0
• redhat jboss enterprise application platform6.0.0
• redhat jboss enterprise application platform6.4.0
• redhat jboss enterprise application platform7.1.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

• Red Hat, Inc. HornetQ/Artemis

  • before 2.4.0affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2023-50780Apache ActiveMQ Artemis: Authenticated users could perform RCE via Jolokia MBeans
  40Plan
• CVE-2026-57967Apache Artemis, Apache ActiveMQ Artemis: Missing authentication on CORE protocol session reattachment
  39Monitor
• CVE-2026-27446Apache Artemis, Apache ActiveMQ Artemis: Auth bypass for Core downstream federation
  37Monitor
• CVE-2026-67593Apache Artemis, Apache Artemis, Apache ActiveMQ Artemis, Apache ActiveMQ Artemis: Pre-authentication Openwire protocol handling can result in queue deletion
  36Monitor
• CVE-2026-49364Apache Artemis, Apache Artemis, Apache ActiveMQ Artemis, Apache ActiveMQ Artemis: Pre-Authentication Cluster Credential Exposure to Discovered Peers
  36Monitor
• CVE-2022-23913Apache ActiveMQ Artemis DoS
  31Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

Code that parses nested structures sets no depth or size limit. A small input can turn into a disproportionate processing load.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1function expand(node) {2  return node.children.map(expand);3}

1const MAX_DEPTH = 32;2function expand(node, depth = 0) {3  if (depth > MAX_DEPTH) throw new Error("too deep");4  return node.children.map((c) => expand(c, depth + 1));5}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.