# CVE-2026-49363

## Summary

- **CVE ID:** CVE-2026-49363
- **Severity:** HIGH
- **CVSS Score:** 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
- **CWE:** CWE-306
- **Published:** Sep 10, 2026
- **Last Modified:** Sep 10, 2026

## Description

An unauthenticated remote attacker connecting with the CORE protocol can discover cluster node details by sending a SUBSCRIBE_TOPOLOGY request prior to authentication.



This issue affects Apache Artemis: from 2.50.0 through 2.56.0; Apache ActiveMQ Artemis: from 1.0.0 through 2.44.0.



Users are recommended to upgrade to version 2.57.0, which fixes the issue.

## Affected Products

- Apache Software Foundation — Apache Artemis (2.50.0)
- Apache Software Foundation — Apache ActiveMQ Artemis (1.0.0)

## References

- [CNA](https://lists.apache.org/thread/syjch88zw6pfdoso9vs46m23xkgxjbxo)
- [CVE](http://www.openwall.com/lists/oss-security/2026/09/10/2)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.29%
- **EPSS Percentile:** 21.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._