UnratedApache Software Foundation Updated

Advisory [CVE-2026-49363] Apache Artemis: unauthenticated remote attacker connecting with the CORE protocol can discover cluster node details by sending a SUBSCRIBE_TOPOLOGY request prior to authentication

This security Apache Software Foundation advisory covers CVE-2026-49363 affecting Apache Artemis.

CVE-2026-49363 Published Sep 10, 2026Updated by vendor Sep 10, 2026

CVE-2026-49363

Affected products & platforms

Apache Software FoundationActiveMQ

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Summary

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 versions

2.50.0 through 2.56.0
1.0.0 through 2.44.0.
through 2.44.0

Official advisory · medium-confidence parse· fetched 2 hours ago·verify at source

Fixed versions

2.57.0

Official advisory · medium-confidence parse· fetched 2 hours ago·verify at source

Mitigation checklist

Recommended fix / mitigation

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

Official advisory · medium-confidence parse· fetched 2 hours ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Official vendor advisoryofficial
Official advisory page fetched and parsed; accepted detail fields are attributed to this page.
Apache Software Foundation
CVE.org CNA recordCVE.org
Independent CNA record used for near-real-time discovery and missed-CVE reconciliation. Discovered from the machine-readable feed https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/delta.json; this link opens the CVE.org record for CVE-2026-49363 instead of the raw feed document.
CVE Program

Cross-references

Validate CVE metadata against the authoritative registries.

CVE-2026-49363NVD CVE.org MITRE

Official resources

ASF Security — reporting & CVE process
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