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{"bugzilla": {"description": "org.apache.qpid/qpid-broker-plugins-amqp-0-8-protocol: Apache Qpid Broker-J: Denial of Service via unbounded type nesting", "id": "2540988", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2540988"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-770", "details": ["A flaw was found in Apache Qpid Broker-J. An unauthenticated remote attacker can cause a Denial of Service (DoS) by sending specially crafted messages containing deeply nested data structures during protocol handling. Because the broker does not properly restrict type nesting depth, processing these payloads triggers a stack overflow error, causing the service to crash."], "mitigation": {"lang": "en:us", "value": "Restrict network access to the broker's AMQP listening ports (by default, TCP port 5672 or port 5671 for TLS) so that only authorized, trusted systems can connect.\nFor example, using firewalld to permit access only from a trusted management or application subnet (e.g., 192.168.1.0/24):\n# firewall-cmd --permanent --add-rich-rule='rule family=\"ipv4\" source address=\"192.168.1.0/24\" port port=\"5672\" protocol=\"tcp\" accept'\n# firewall-cmd --reload\nWarning: Applying firewall rules may interrupt existing client sessions and requires reloading the firewall service. Test rule changes in a staging environment to ensure necessary messaging traffic is not inadvertently blocked."}, "name": "CVE-2026-92564", "package_state": [{"cpe": "cpe:/a:redhat:jboss_fuse:7", "fix_state": "Affected", "package_name": "qpid-broker-plugins-amqp-0-8-protocol", "product_name": "Red Hat Fuse 7"}], "public_date": "2026-09-25T07:59:30Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-92564\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-92564\nhttp://www.openwall.com/lists/oss-security/2026/09/24/14\nhttps://lists.apache.org/thread/hw4jkngtkzf0dxdj9mv3z2p71mkpjvx4"], "statement": "This vulnerability is rated as Important because an unauthenticated remote client can trigger a denial of service on the broker service without requiring valid credentials or user interaction. In typical Red Hat deployments incorporating Qpid components, exposing broker endpoints directly to untrusted networks allows external parties to crash the service via deeply nested message structures. Red Hat products operating in restricted or isolated network architectures face reduced overall exposure.", "threat_severity": "Important"}