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{"bugzilla": {"description": "qpid-java: org.apache.qpid/qpid-broker-plugins-amqp-0-8-protocol: Apache Qpid Broker-J: Denial of Service via excessive memory allocation in AMQP decoder", "id": "2540989", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2540989"}, "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 could exploit this vulnerability by sending specially crafted messages with manipulated type size or count parameters to the AMQP (Advanced Message Queuing Protocol) decoder. This causes excessive memory allocation, leading to a Denial of Service (DoS) by exhausting available system resources."], "mitigation": {"lang": "en:us", "value": "Restrict network access to the AMQP messaging listeners so that only trusted client systems and application hosts can establish connections. Because this flaw is triggered during protocol decoding prior to authentication, limiting network exposure effectively reduces the attack surface.\nNetwork access can be restricted to authorized subnets using `firewalld` (adjusting for the configured AMQP listener port, such as default TCP port 5672 or 5671 for AMQPS):\n```bash\nfirewall-cmd --permanent --zone=trusted --add-source=192.168.1.0/24\nfirewall-cmd --permanent --remove-port=5672/tcp --zone=public\nfirewall-cmd --reload\n```\nCaveats: Network filtering does not prevent attacks originating from trusted subnets or compromised internal hosts. Verify that all legitimate clients and broker instances are explicitly permitted before modifying firewall settings. Reloading firewall configurations takes effect immediately and may sever unauthorized active sessions."}, "name": "CVE-2026-92550", "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": "2026-09-25T08:17:38Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-92550\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-92550\nhttps://lists.apache.org/thread/56w1kxz9h23q364ffyvj7cssdhnld5dq"], "statement": "This vulnerability is rated as Important because unauthenticated remote attackers can exhaust host memory without possessing valid credentials, resulting in a total loss of broker availability. In typical Red Hat deployments, such as distributed integration workflows using Red Hat JBoss Fuse, messaging endpoints are accessible over internal networks to process incoming AMQP traffic. Because the flaw is triggered prior to authentication during protocol decoding, any reachable broker listener can be terminated abruptly, interrupting critical communications across connected client applications.", "threat_severity": "Important"}