CVE-2026-49270: CWE-1230 Exposure of Sensitive Information Through Metadata in Apache Software Foundation Apache ActiveMQ Broker
Apache ActiveMQ Broker versions before 5.19.7 and from 6.0.0 before 6.2.6 have a vulnerability that allows unauthenticated attackers to obtain sensitive metadata about durable topic subscriptions. This includes client identifiers, subscription names, topic destinations, and JMS selector expressions. The issue arises when brokers are configured with a network connector with syncDurableSubs set to true and respond to BrokerInfo commands without verifying authentication. Upgrading to versions 5.19.7 or 6.2.6 resolves this vulnerability.
AI Analysis
Technical Summary
CVE-2026-49270 is an information exposure vulnerability in Apache ActiveMQ Broker. When a broker is configured with a network connector with syncDurableSubs set to true, it improperly responds to unauthenticated BrokerInfo commands by disclosing a list of all durable topic subscriptions, including sensitive metadata such as client identifiers, subscription names, topic destinations, and JMS selector expressions. This occurs because the broker does not verify that the connection is authenticated before responding. The vulnerability affects Apache ActiveMQ Broker versions before 5.19.7 and versions from 6.0.0 before 6.2.6. The issue is fixed in versions 5.19.7 and 6.2.6.
Potential Impact
An unauthenticated attacker can obtain sensitive information about all durable topic subscriptions on the broker, including client identifiers and subscription details. This exposure could aid further attacks or reconnaissance but does not allow modification or denial of service. The CVSS score is 5.9 (medium severity), reflecting network attack vector, high impact on confidentiality, no privileges required, and no user interaction needed.
Mitigation Recommendations
Users should upgrade Apache ActiveMQ Broker to version 5.19.7 or 6.2.6 or later, where this vulnerability is fixed. Patch status is confirmed by the vendor advisory recommending these versions. No other mitigations are specified. Patch status is confirmed by the vendor advisory recommending these versions.
CVE-2026-49270: CWE-1230 Exposure of Sensitive Information Through Metadata in Apache Software Foundation Apache ActiveMQ Broker
Description
Apache ActiveMQ Broker versions before 5.19.7 and from 6.0.0 before 6.2.6 have a vulnerability that allows unauthenticated attackers to obtain sensitive metadata about durable topic subscriptions. This includes client identifiers, subscription names, topic destinations, and JMS selector expressions. The issue arises when brokers are configured with a network connector with syncDurableSubs set to true and respond to BrokerInfo commands without verifying authentication. Upgrading to versions 5.19.7 or 6.2.6 resolves this vulnerability.
CVSS v3.1
Score 5.9medium
Affected software
pkg:maven/org.apache.activemq/activemq-brokerRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-49270 is an information exposure vulnerability in Apache ActiveMQ Broker. When a broker is configured with a network connector with syncDurableSubs set to true, it improperly responds to unauthenticated BrokerInfo commands by disclosing a list of all durable topic subscriptions, including sensitive metadata such as client identifiers, subscription names, topic destinations, and JMS selector expressions. This occurs because the broker does not verify that the connection is authenticated before responding. The vulnerability affects Apache ActiveMQ Broker versions before 5.19.7 and versions from 6.0.0 before 6.2.6. The issue is fixed in versions 5.19.7 and 6.2.6.
Potential Impact
An unauthenticated attacker can obtain sensitive information about all durable topic subscriptions on the broker, including client identifiers and subscription details. This exposure could aid further attacks or reconnaissance but does not allow modification or denial of service. The CVSS score is 5.9 (medium severity), reflecting network attack vector, high impact on confidentiality, no privileges required, and no user interaction needed.
Mitigation Recommendations
Users should upgrade Apache ActiveMQ Broker to version 5.19.7 or 6.2.6 or later, where this vulnerability is fixed. Patch status is confirmed by the vendor advisory recommending these versions. No other mitigations are specified. Patch status is confirmed by the vendor advisory recommending these versions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-05-28T18:51:45.713Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a1d4e79e29bf47b50cd4b57
Added to database: 06/01/2026, 09:18:49 UTC
Last enriched: 07/10/2026, 09:50:32 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 104
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