CVE-2026-49363

7.5 highEPSS 0.8%

High (7.5) in apache artemis. EPSS 0.8% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS: 0.8% chance of exploitation in the next 30 days; higher than 56% of CVEs (scores of 2026-10-31)
CWE: CWE-306
Published: 2026-09-10
Modified: 2026-09-16
Record from: the NVD, synced 2026-10-19

Affected

apache:artemis

References

https://lists.apache.org/thread/syjch88zw6pfdoso9vs46m23xkgxjbxo
http://www.openwall.com/lists/oss-security/2026/09/10/2

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