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.
Published: 2026-06-01
Score: 5.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The vulnerability in Apache ActiveMQ allows an unauthenticated attacker to retrieve a detailed list of all durable topic subscriptions from the broker. By sending a BrokerInfo command, the broker responds with client identifiers, subscription names, topic destinations, and JMS selector expressions without first authenticating the connection.

Affected Systems

Apache Software Foundation products – Apache ActiveMQ, Apache ActiveMQ All, and Apache ActiveMQ Broker – are affected. Versions prior to 5.19.7 and the range from 6.0.0 up to but not including 6.2.6 receive the insecure behavior.

Risk and Exploitability

The flaw exposes sensitive configuration data without requiring authentication; however, the EPSS score of <1% suggests a low probability of exploitation over the network. The CVSS score of 5.9 indicates moderate severity, and the vulnerability is not yet listed in CISA KEV.

Generated by OpenCVE AI on June 1, 2026 at 15:06 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade to Apache ActiveMQ 5.19.7 or later, or 6.2.6 or later, which addresses the incorrect BrokerInfo handling.
  • If an upgrade is not immediately possible, configure the broker to disable syncDurableSubs or set it to false to prevent the disclosure.
  • Implement network segmentation or firewall rules to restrict BrokerInfo command traffic from untrusted sources.

Generated by OpenCVE AI on June 1, 2026 at 15:06 UTC.

Tracking

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Advisories

No advisories yet.

History

Wed, 03 Jun 2026 02:30:00 +0000

Type Values Removed Values Added
First Time appeared Apache activemq All
Vendors & Products Apache activemq All

Mon, 01 Jun 2026 17:15:00 +0000

Type Values Removed Values Added
First Time appeared Apache
Apache activemq
Apache activemq Broker
CPEs cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*
cpe:2.3:a:apache:activemq_broker:*:*:*:*:*:*:*:*
Vendors & Products Apache
Apache activemq
Apache activemq Broker

Mon, 01 Jun 2026 13:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 01 Jun 2026 09:30:00 +0000

Type Values Removed Values Added
References

Mon, 01 Jun 2026 09:15:00 +0000

Type Values Removed Values Added
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.
Title Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All: Durable Subscription Disclosure via Crafted BrokerInfo (OpenWire)
Weaknesses CWE-1230
References

Subscriptions

Apache Activemq Activemq All Activemq Broker
cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2026-06-01T13:11:12.455Z

Reserved: 2026-05-28T18:51:45.713Z

Link: CVE-2026-49270

cve-icon Vulnrichment

Updated: 2026-06-01T07:48:08.887Z

cve-icon NVD

Status : Analyzed

Published: 2026-06-01T09:16:20.650

Modified: 2026-06-01T17:09:45.710

Link: CVE-2026-49270

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-02T20:55:03Z

Weaknesses
  • CWE-1230

    Exposure of Sensitive Information Through Metadata