An unauthenticated remote attacker connecting with the CORE protocol can discover cluster node details by sending a SUBSCRIBE_TOPOLOGY request prior… (CVE-2026-49363)
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.
AI Analysis
Technical Summary
CVE-2026-49363 is a vulnerability in Apache Artemis and Apache ActiveMQ Artemis where an unauthenticated remote attacker can obtain cluster node information by sending a SUBSCRIBE_TOPOLOGY request via the CORE protocol prior to authentication. This allows information disclosure of cluster topology details without authentication. The affected versions are Apache Artemis from 2.50.0 through 2.56.0 and Apache ActiveMQ Artemis from 1.0.0 through 2.44.0, with a unified affected range of >=2.50.0 <2.57.0. The issue is resolved in version 2.57.0.
Potential Impact
The vulnerability allows unauthenticated remote attackers to discover cluster node details, which constitutes an information disclosure risk. There is no indication of further exploitation such as code execution or denial of service. No known exploits in the wild have been reported.
Mitigation Recommendations
Users should upgrade to Apache Artemis version 2.57.0 or later, where this vulnerability is fixed. No other mitigations or temporary workarounds are indicated.
An unauthenticated remote attacker connecting with the CORE protocol can discover cluster node details by sending a SUBSCRIBE_TOPOLOGY request prior… (CVE-2026-49363)
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.
CVSS v3.1
Score 7.5high
Affected software
pkg:maven/org.apache.activemq/artemis-core-clientRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-49363 is a vulnerability in Apache Artemis and Apache ActiveMQ Artemis where an unauthenticated remote attacker can obtain cluster node information by sending a SUBSCRIBE_TOPOLOGY request via the CORE protocol prior to authentication. This allows information disclosure of cluster topology details without authentication. The affected versions are Apache Artemis from 2.50.0 through 2.56.0 and Apache ActiveMQ Artemis from 1.0.0 through 2.44.0, with a unified affected range of >=2.50.0 <2.57.0. The issue is resolved in version 2.57.0.
Potential Impact
The vulnerability allows unauthenticated remote attackers to discover cluster node details, which constitutes an information disclosure risk. There is no indication of further exploitation such as code execution or denial of service. No known exploits in the wild have been reported.
Mitigation Recommendations
Users should upgrade to Apache Artemis version 2.57.0 or later, where this vulnerability is fixed. No other mitigations or temporary workarounds are indicated.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-68p5-g7wf-vrwp
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-49363"]
Threat ID: 6aa2af85acd9273b4925b441
Added to database: 09/10/2026, 13:24:21 UTC
Last enriched: 09/10/2026, 14:11:02 UTC
Last updated: 09/11/2026, 16:02:51 UTC
Views: 23
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