CVE-2026-49270

Medium

Description

Exposure of Sensitive Information Through Metadata vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All. Brokers that are configured with a network connector with syncDurableSubs set to true, are vulnerable to an unauthenticated attacker who can receive a list of all durable topic subscriptions in the broker, including client identifiers, subscription names, topic destinations, and JMS selector expressions, by sending a BrokerInfo command. The broker incorrectly responds without first ensuring the connection is authenticated. This issue affects Apache ActiveMQ Broker: before 5.19.7, from 6.0.0 before 6.2.6; Apache ActiveMQ: before 5.19.7, from 6.0.0 before 6.2.6; Apache ActiveMQ All: before 5.19.7, from 6.0.0 before 6.2.6. Users are recommended to upgrade to version 6.2.6 or 5.19.7, which fixes the issue.

SeverityMedium
CVSS5.9
Exploit probability—
ProductApache Activemq
PublishedJun 1, 2026
First seenJun 1, 2026
Weakness typeCWE-1230CWE-1230

How to fix

Update
  • apache activemq5.19.7, 6.2.6 or later
  • apache activemq_broker5.19.7, 6.2.6 or later
  • org.apache.activemq:apache-activemq5.19.7, 6.2.6 or later
  • org.apache.activemq:activemq-broker5.19.7, 6.2.6 or later
  • org.apache.activemq:activemq-all5.19.7, 6.2.6 or later

Affected products

ProductAffected versionsFixed in
apache activemqv < 5.19.7, 6.0.0 ≤ v < 6.2.65.19.7, 6.2.6
apache activemq_brokerv < 5.19.7, 6.0.0 ≤ v < 6.2.65.19.7, 6.2.6
org.apache.activemq:apache-activemqMavenv < 5.19.7, 6.0.0 ≤ v < 6.2.65.19.7, 6.2.6
org.apache.activemq:activemq-brokerMavenv < 5.19.7, 6.0.0 ≤ v < 6.2.65.19.7, 6.2.6
org.apache.activemq:activemq-allMavenv < 5.19.7, 6.0.0 ≤ v < 6.2.65.19.7, 6.2.6

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