Improper access control in ActiveMQ - CVE-2026-49270
Published: June 4, 2026
Vulnerability identifier: #VU133393
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-49270
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Apache Foundation
Affected software:
ActiveMQ
ActiveMQ
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to improper access control in the OpenWire BrokerInfo handling when processing a BrokerInfo command on a broker with a network connector configured with syncDurableSubs set to true. A remote attacker can send a BrokerInfo command to disclose sensitive information.
The exposed metadata includes durable topic subscription details such as client identifiers, subscription names, topic destinations, and JMS selector expressions.
How to mitigate CVE-2026-49270
Install security update from vendor's website.