Summary
Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All have an Exposure of Sensitive Information Through Metadata vulnerability
Full technical 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.
Impact
CVE-2026-49270 has a CVSS score of 5.9 (Medium). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (5.19.7, 6.2.6); upgrading removes the vulnerable code path.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
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org.apache.activemq:apache-activemq to 5.19.7 or later; org.apache.activemq:apache-activemq to 6.2.6 or later; org.apache.activemq:activemq-broker to 5.19.7 or later; org.apache.activemq:activemq-broker to 6.2.6 or later; org.apache.activemq:activemq-all to 5.19.7 or later; org.apache.activemq:activemq-all to 6.2.6 or later
Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.
Frequently Asked Questions
- What is CVE-2026-49270? CVE-2026-49270 is a medium-severity security vulnerability in org.apache.activemq:apache-activemq (maven), affecting versions < 5.19.7. It is fixed in 5.19.7, 6.2.6.
- How severe is CVE-2026-49270? CVE-2026-49270 has a CVSS score of 5.9 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
- Which packages are affected by CVE-2026-49270?
org.apache.activemq:apache-activemq(maven) (versions < 5.19.7)org.apache.activemq:activemq-broker(maven) (versions < 5.19.7)org.apache.activemq:activemq-all(maven) (versions < 5.19.7)
- Is there a fix for CVE-2026-49270? Yes. CVE-2026-49270 is fixed in 5.19.7, 6.2.6. Upgrade to this version or later.
- Is CVE-2026-49270 exploitable, and should I be worried? Whether CVE-2026-49270 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether CVE-2026-49270 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix CVE-2026-49270?
- Upgrade
org.apache.activemq:apache-activemqto 5.19.7 or later - Upgrade
org.apache.activemq:apache-activemqto 6.2.6 or later - Upgrade
org.apache.activemq:activemq-brokerto 5.19.7 or later - Upgrade
org.apache.activemq:activemq-brokerto 6.2.6 or later - Upgrade
org.apache.activemq:activemq-allto 5.19.7 or later - Upgrade
org.apache.activemq:activemq-allto 6.2.6 or later
- Upgrade