Remote Information Disclosure in Apache Artemis and ActiveMQ Products
CVE-2026-49363

7.5HIGH

Key Information:

Vendor

Apache
Status
Apache Artemis
Apache ActiveMQ Artemis
Vendor
CVE Published:
10 September 2026

What is CVE-2026-49363?

A vulnerability in Apache Artemis and ActiveMQ allows an unauthenticated remote attacker to gain sensitive information about cluster node details. By leveraging the CORE protocol, attackers can send a SUBSCRIBE_TOPOLOGY request prior to authentication, potentially exposing critical configuration and operational details without proper access controls. Users are advised to update to version 2.57.0, which addresses this security issue.

Affected Version(s)

Apache ActiveMQ Artemis 1.0.0 <= 2.44.0

Apache Artemis 2.50.0 <= 2.56.0

References

https://lists.apache.org/thread/syjch88zw6pfdoso9vs46m23x...
vendor-advisory

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Domenico Francesco Bruscino
.