Missing Authentication for Critical Function in Apache ActiveMQ Artemis and Apache Artemis - CVE-2026-49363
Published: September 10, 2026
Vulnerability identifier: #VU148869
CSH Severity: Medium
CVSS v4: 6.9 [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]
CVE-ID: CVE-2026-49363
CWE-ID: CWE-306
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose cluster node details.
The vulnerability exists due to missing authentication in the CORE protocol topology subscription feature when sending a SUBSCRIBE_TOPOLOGY request prior to authentication. A remote attacker can send a SUBSCRIBE_TOPOLOGY request to disclose cluster node details.
Affected software
Apache ActiveMQ Artemis
Apache Artemis
Apache Artemis
How to mitigate CVE-2026-49363
Install security update from vendor's website.
Apache Artemis - update to 2.57.0