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"product_name": "Red Hat Single Sign-On 7"}, {"cpe": "cpe:/a:redhat:red_hat_single_sign_on:7", "fix_state": "Fix deferred", "package_name": "artemis-journal", "product_name": "Red Hat Single Sign-On 7"}, {"cpe": "cpe:/a:redhat:red_hat_single_sign_on:7", "fix_state": "Fix deferred", "package_name": "artemis-ra", "product_name": "Red Hat Single Sign-On 7"}, {"cpe": "cpe:/a:redhat:red_hat_single_sign_on:7", "fix_state": "Fix deferred", "package_name": "artemis-selector", "product_name": "Red Hat Single Sign-On 7"}, {"cpe": "cpe:/a:redhat:red_hat_single_sign_on:7", "fix_state": "Fix deferred", "package_name": "artemis-server", "product_name": "Red Hat Single Sign-On 7"}, {"cpe": "cpe:/a:redhat:red_hat_single_sign_on:7", "fix_state": "Fix deferred", "package_name": "artemis-service-extensions", "product_name": "Red Hat Single Sign-On 7"}, {"cpe": "cpe:/a:redhat:red_hat_single_sign_on:7", "fix_state": "Fix deferred", "package_name": "artemis-tools", "product_name": "Red Hat Single Sign-On 7"}, {"cpe": "cpe:/a:redhat:red_hat_single_sign_on:7", "fix_state": "Fix deferred", "package_name": "artemis-wildfly-integration", "product_name": "Red Hat Single Sign-On 7"}, {"cpe": "cpe:/a:redhat:red_hat_single_sign_on:7", "fix_state": "Fix deferred", "package_name": "libartemis-native-linux-i686", "product_name": "Red Hat Single Sign-On 7"}, {"cpe": "cpe:/a:redhat:red_hat_single_sign_on:7", "fix_state": "Fix deferred", "package_name": "libartemis-native-linux-x86_64", "product_name": "Red Hat Single Sign-On 7"}, {"cpe": "cpe:/a:redhat:red_hat_single_sign_on:7", "fix_state": "Fix deferred", "package_name": "wildfly-messaging-activemq", "product_name": "Red Hat Single Sign-On 7"}], "public_date": "2026-06-30T09:49:55Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53916\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53916\nhttps://lists.apache.org/thread/07hjsj88hqgsb7vvg6ttsj56ts9vjs5n"], "statement": "Red Hat products ship Apache ActiveMQ Classic components as transitive dependencies. The vulnerability is in the Classic ActiveMQ STOMP NIO codec, which does not limit the size of header byte buffering, allowing an unauthenticated attacker to exhaust JVM heap memory. Apache ActiveMQ Artemis, which powers Red Hat AMQ Broker, has its own STOMP protocol implementation (artemis-stomp-protocol) that does not share this code path. The Classic STOMP NIO codec is not exposed in Red Hat product deployments.", "threat_severity": "Important"}