Medium severity · published Jun 1, 2026
CVE-2026-49270
Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All: Durable Subscription Disclosure via Crafted BrokerInfo (OpenWire)
5.9
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 31% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AC
ActiveMQ · Apache
5.14.0 before 5.19.7; 6.0.0 before 6.2.6 · source: vendor, NVD
AA
Apache ActiveMQ All · Apache Software Foundation
5.14.0 before 5.19.7; 6.0.0 before 6.2.6 · source: vendor
AA
Apache ActiveMQ Broker · Apache Software Foundation
5.14.0 before 5.19.7; 6.0.0 before 6.2.6 · source: vendor
AB
Activemq Broker · Apache
before 5.19.7; 6.0.0 before 6.2.6 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-49270
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-49270
Mailing List
https://lists.apache.org/thread/k3233c1x506z3w7x4z0dqvd86d4v2fr2
Mailing List
http://www.openwall.com/lists/oss-security/2026/05/31/22
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