CVE-2026-49363

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 Software

VendorProductVersion RangeStatus
Apache Software FoundationApache Artemis2.50.0 <= 2.56.0affected
Apache Software FoundationApache ActiveMQ Artemis1.0.0 <= 2.44.0affected

Weaknesses

  • CWE-306: CWE-306 Missing authentication for critical function

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

References