Missing Authentication for Critical Function Affecting org.apache.activemq:artemis-server package, versions [1.0.0,2.57.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-JAVA-ORGAPACHEACTIVEMQ-20260798
- published29 Sept 2026
- disclosed10 Sept 2026
- creditUnknown
Introduced: 10 Sep 2026
NewCVE-2026-49363 (opens in a new tab)How to fix?
Upgrade org.apache.activemq:artemis-server to version 2.57.0 or higher.
Overview
org.apache.activemq:artemis-server is a server package for the ActiveMQ-Artemis project.
Affected versions of this package are vulnerable to Missing Authentication for Critical Function in the handlePacket process of CoreProtocolManager.LocalChannelHandler when processing topology subscription requests on channel0 without authentication. An attacker can access sensitive broker information, including node identifiers, internal hostnames/IPs, port numbers, connector configurations, and backup group names, by sending a specially crafted packet. In clustered environments, the attacker may continuously receive topology updates due to a persistent listener.
Workaround
This vulnerability can be mitigated by removing the Core protocol from internet-facing acceptors, enabling mutual TLS with client authentication, or disabling HTTP-upgrade for the Core protocol if not required.