{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-49363", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-05-29T16:33:06.443Z", "datePublished": "2026-09-10T04:51:56.614Z", "dateUpdated": "2026-09-10T05:11:23.010Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-09-10T04:51:56.614Z"}, "title": "Apache Artemis, Apache ActiveMQ Artemis: Pre-Authentication Information Disclosure in CORE Protocol Topology Subscription", "problemTypes": [{"descriptions": [{"description": "CWE-306 Missing authentication for critical function", "lang": "en", "cweId": "CWE-306", "type": "CWE"}]}], "source": {"discovery": "UNKNOWN"}, "affected": [{"vendor": "Apache Software Foundation", "product": "Apache Artemis", "collectionURL": "https://repo.maven.apache.org/maven2", "packageName": "org.apache.artemis:artemis-server", "packageURL": "pkg:maven/org.apache.artemis/artemis-server", "versions": [{"status": "affected", "version": "2.50.0", "lessThanOrEqual": "2.56.0", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Apache Software Foundation", "product": "Apache ActiveMQ Artemis", "collectionURL": "https://repo.maven.apache.org/maven2", "packageName": "org.apache.activemq:artemis-server", "packageURL": "pkg:maven/org.apache.activemq/artemis-server", "versions": [{"status": "affected", "version": "1.0.0", "lessThanOrEqual": "2.44.0", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"value": "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; 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.", "lang": "en", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>An unauthenticated remote attacker connecting with the CORE protocol can discover cluster node details by sending a SUBSCRIBE_TOPOLOGY request prior to authentication.</p><p>This issue affects Apache Artemis: from 2.50.0 through 2.56.0; Apache ActiveMQ Artemis: from 1.0.0 through 2.44.0.</p><p>Users are recommended to upgrade to version 2.57.0, which fixes the issue.</p>"}]}], "references": [{"url": "https://lists.apache.org/thread/syjch88zw6pfdoso9vs46m23xkgxjbxo", "tags": ["vendor-advisory"]}], "metrics": [{"other": {"type": "Textual description of severity", "content": {"text": "moderate"}}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "credits": [{"lang": "en", "value": "Domenico Francesco Bruscino", "type": "finder"}], "x_generator": {"engine": "Vulnogram 0.2.0"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "http://www.openwall.com/lists/oss-security/2026/09/10/2"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-09-10T05:11:23.010Z"}}]}}

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{"affected": [{"affectedData": [{"collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected", "packageName": "org.apache.artemis:artemis-server", "packageURL": "pkg:maven/org.apache.artemis/artemis-server", "product": "Apache Artemis", "vendor": "Apache Software Foundation", "versions": [{"lessThanOrEqual": "2.56.0", "status": "affected", "version": "2.50.0", "versionType": "semver"}]}, {"collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected", "packageName": "org.apache.activemq:artemis-server", "packageURL": "pkg:maven/org.apache.activemq/artemis-server", "product": "Apache ActiveMQ Artemis", "vendor": "Apache Software Foundation", "versions": [{"lessThanOrEqual": "2.44.0", "status": "affected", "version": "1.0.0", "versionType": "semver"}]}], "source": "security@apache.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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; 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."}], "id": "CVE-2026-49363", "lastModified": "2026-09-10T06:17:05.290", "metrics": {}, "published": "2026-09-10T05:17:01.123", "references": [{"source": "security@apache.org", "url": "https://lists.apache.org/thread/syjch88zw6pfdoso9vs46m23xkgxjbxo"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2026/09/10/2"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-306"}], "source": "security@apache.org", "type": "Secondary"}]}

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