{"id":"CVE-2026-49363","title":"An unauthenticated remote attacker connecting with the CORE protocol can discover cluster node details by sending a SUBSCRIBE_TOPOLOGY request prior to authentication.\n\n\n\nThis issue affects Apache Artemis: from 2.50.0 through 2.56.0; Apa…","summary":"An unauthenticated remote attacker connecting with the CORE protocol can discover cluster node details by sending a SUBSCRIBE_TOPOLOGY request prior to authentication.\n\n\n\nThis issue affects Apache Artemis: from 2.50.0 through 2.56.0; Apa…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-306"],"vendor":"apache","product":"artemis","affected":["artemis >= 1.0.0, < 2.44.0","artemis >= 2.50.0, < 2.57.0"],"patched":["artemis 2.57.0"],"published":"2026-09-10","updated":"2026-09-16","sourceUpdated":"2026-09-16T01:10:36.583","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-49363","references":[{"url":"https://lists.apache.org/thread/syjch88zw6pfdoso9vs46m23xkgxjbxo","label":"security@apache.org"},{"url":"http://www.openwall.com/lists/oss-security/2026/09/10/2","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49363.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-49363"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2492627"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-49363"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49363"},{"url":"https://access.redhat.com/errata/RHSA-2026:70230"},{"url":"https://access.redhat.com/errata/RHSA-2026:70228"},{"url":"https://access.redhat.com/errata/RHSA-2026:70229"},{"url":"https://access.redhat.com/errata/RHSA-2026:66545"},{"url":"https://access.redhat.com/errata/RHSA-2026:66488"}],"tags":["nvd","cve.org","csaf","vex","red-hat","score-dispute"],"epss":0.00804,"epssPercentile":0.54822,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-10T15:55:02.760409Z"},"ingestedAt":"2026-09-13T23:56:14.799Z","scores":{"nvd":7.5,"vendor":5.3},"slug":"CVE-2026-49363","body":"## Overview\n\nAn unauthenticated remote attacker connecting with the CORE protocol can discover cluster node details by sending a SUBSCRIBE_TOPOLOGY request prior to authentication.\n\n\n\nThis issue affects Apache Artemis: from 2.50.0 through 2.56.0; Apache ActiveMQ Artemis: from 1.0.0 through 2.44.0.\n\n\n\nUsers are recommended to upgrade to version 2.57.0, which fixes the issue.\n\n## Affected\n\n- `artemis >= 1.0.0, < 2.44.0`\n- `artemis >= 2.50.0, < 2.57.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `artemis 2.57.0`\n\n## Vendor advisories\n\n- **RHSA-2026:70230** · Red Hat · fixed in: Red Hat JBoss EAP 8.1 for RHEL 10 · released 2026-09-22 · [advisory](https://access.redhat.com/errata/RHSA-2026:70230)\n- **RHSA-2026:70228** · Red Hat · fixed in: Red Hat JBoss EAP 8.1 for RHEL 8 · released 2026-09-22 · [advisory](https://access.redhat.com/errata/RHSA-2026:70228)\n- **RHSA-2026:70229** · Red Hat · fixed in: Red Hat JBoss EAP 8.1 for RHEL 9 · released 2026-09-22 · [advisory](https://access.redhat.com/errata/RHSA-2026:70229)\n- **RHSA-2026:66545** · Red Hat · fixed in: Red Hat AMQ Broker 7.13.6 · released 2026-09-10 · [advisory](https://access.redhat.com/errata/RHSA-2026:66545)\n- **RHSA-2026:66488** · Red Hat · fixed in: Red Hat AMQ Broker 7.14.1 · released 2026-09-10 · [advisory](https://access.redhat.com/errata/RHSA-2026:66488)\n- **Red Hat VEX** · Moderate · affected: Red Hat JBoss Enterprise Application Platform 7, Red Hat JBoss Enterprise Application Platform Expansion Pack · no fix planned: Red Hat JBoss Enterprise Application Platform 7, Red Hat JBoss Enterprise Application Platform Expansion Pack · updated 2026-09-22 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49363.json)","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[{"seq":50214,"id":"CVE-2026-49363","ts":1789059486935,"field":"cvss","old":null,"new":"7.5"},{"seq":50213,"id":"CVE-2026-49363","ts":1789059486935,"field":"severity","old":"none","new":"high"}]}