Apache ActiveMQ, ActiveMQ Broker: Repeated rejected temporary destination consumer requests can lead to broker OOM
CVSS score
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EPSS probability
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Risk score
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Published
3 h ago
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Vulnerability description
DayBreach AI Explanation
Verified against sourcesSources read
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Evidence confidence
%63
Short explanation
This vulnerability affecting Apache ActiveMQ and ActiveMQ Broker can lead to memory leakage and denial of service (OOM) when an authenticated OpenWire client sends repeated rejected temporary destination consumer requests.
An authenticated attacker can exhaust broker heap memory by repeating temporary queue or topic requests, causing service disruption.
What should be done?
- Upgrade to version 6.4.0, 6.3.3, or 5.19.12
- Follow vendor advisory guidance
Chain of evidence and sources
Apache ActiveMQ ve ActiveMQ Broker sürümleri 6.0.0 ile 6.3.3 arası ve 5.19.12 öncesi bu açıktan etkilenebilir.
Kullanıcıların sorunu gideren 6.4.0, 6.3.3 veya 5.19.12 sürümüne yükseltme yapması önerilir.
Show the technical text from the sources
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.
CWE: CWE-401
This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.
IMPACT: Affected Products and Software
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| The sources have not yet published a verified CVSS metric. | ||||
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-108949 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-108949 weaknesses.
Official Sources and Advisories
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Weakness Type (CWE & CAPEC)
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