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  4. CVE 2026 108949 apache activemq activemq broker repeated rejected
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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2026-108949

Apache ActiveMQ, ActiveMQ Broker: Repeated rejected temporary destination consumer requests can lead to broker OOMCVE-2026-108949

Answer in brief

CVE-2026-108949 records a Unknown severity vulnerability in Apache ActiveMQ, ActiveMQ Broker: Repeated rejected temporary destination consumer requests can lead to broker OOM. The current sources do not mark it as known exploited. The current feed maps Apache Software Foundation/org.apache.activemq:activemq-broker (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 4, 2026Updated Nov 4, 2026Source checked Nov 4, 2026First seen by HOL Nov 4, 2026Material review Nov 4, 2026
Upstream Advisory

Key facts

Risk
Unknown severitySource severity not reported
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Apache Software Foundation/org.apache.activemq:activemq-broker (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Apache Software Foundation/org.apache.activemq:activemq-brokergeneric>=6.0.0 <6.3.3 || >=0 <5.19.126.3.3, 5.19.12

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Apache Software Foundation/org.apache.activemq:activemq-broker.
  2. 2Review the reported fix. Update Apache Software Foundation/org.apache.activemq:activemq-broker to 6.3.3 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Nov 4, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 4, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 4, 2026

Sources and claim methodology

  • Source referencelists.apache.org
  • Source referenceopenwall.com
Upstream source description

Denial of Service via OOM vulnerability in Apache ActiveMQ, ActiveMQ Broker. An authenticated OpenWire client that sends a ConsumerInfo for a temporary queue/topic owned by another connection is rejected with InvalidDestinationException, but the rejected Subscription is left behind in the region's subscriptions map. Repeating the request leaks broker heap until OOM because the broker does not clean up the rejected subscriptions in the map. This issue affects Apache ActiveMQ: from 6.0.0 before 6.3.3, before 5.19.12; ActiveMQ Broker: from 6.0.0 before 6.3.3, before 5.19.12. Users are recommended to upgrade to version 6.4.0, 6.3.3, or 5.19.12, which fixes the issue.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Apache ActiveMQ, ActiveMQ Broker: The broker does not verify user provided connection id matches connectionSame apache software foundation/org.apache.activemq package

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-401
Source
CVE List V5
Source checked
Nov 4, 2026
References
2 linked sources
Open source record