GHSA-f77w-px59-cqf5HighCVSS 7.5

Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Client, Apache ActiveMQ Broker have Memory Allocation with Excessive Size Value vulnerability

Published
June 30, 2026
Last Modified
November 4, 2026

🔗 CVE IDs covered (1)

CVE-2026-53917 →

📋 Description

Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Client, Apache ActiveMQ Broker.

An authenticated user can cause a broker DoS by sending a crafted OpenWire Message with a large encoded size value for the map. OpenWire message property maps are unmarshaled without size validation which can trigger OOM and crash the broker. This issue affects Apache ActiveMQ: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ All: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ Client: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ Broker: before 5.19.8, from 6.0.0 before 6.2.7.

Users are recommended to upgrade to version 6.2.7 or 5.19.8, which fixes the issue.

🎯 Affected products8

  • maven/org.apache.activemq:apache-activemq:< 5.19.8
  • maven/org.apache.activemq:apache-activemq:>= 6.0.0, < 6.2.7
  • maven/org.apache.activemq:activemq-all:< 5.19.8
  • maven/org.apache.activemq:activemq-all:>= 6.0.0, < 6.2.7
  • maven/org.apache.activemq:activemq-client:< 5.19.8
  • maven/org.apache.activemq:activemq-client:>= 6.0.0, < 6.2.7
  • maven/org.apache.activemq:activemq-broker:< 5.19.8
  • maven/org.apache.activemq:activemq-broker:>= 6.0.0, < 6.2.7

🔗 References (10)