GHSA-xvqc-pp94-fmpxMediumCVSS 5.4

Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ MQTT vulnerable to Integer Overflow or Wraparound

Published
April 9, 2026
Last Modified
April 10, 2026

🔗 CVE IDs covered (1)

CVE-2026-40046 →

📋 Description

Integer Overflow or Wraparound vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ MQTT.

The fix for "CVE-2025-66168: MQTT control packet remaining length field is not properly validated" was only applied to 5.19.2 (and future 5.19.x) releases but was missed for all 6.0.0+ versions. This issue affects Apache ActiveMQ: from 6.0.0 before 6.2.4; Apache ActiveMQ All: from 6.0.0 before 6.2.4; Apache ActiveMQ MQTT: from 6.0.0 before 6.2.4.

Users are recommended to upgrade to version 6.2.4 or a 5.19.x version starting with 5.19.2 or later (currently latest is 5.19.5), which fixes the issue.

🎯 Affected products3

  • maven/org.apache.activemq:apache-activemq:>= 6.0.0, < 6.2.4
  • maven/org.apache.activemq:activemq-all:>= 6.0.0, < 6.2.4
  • maven/org.apache.activemq:activemq-mqtt:>= 6.0.0, < 6.2.4

🔗 References (5)