Multiple cross-site scripting (XSS) vulnerabilities in the management web UI in the RabbitMQ management plugin before 3.4.3 allow remote authenticated users to inject arbitrary web script or HTML via (1) message details when a message is unqueued, such as headers or arguments; (2) policy names, which are not properly handled when viewing policies; (3) details for AMQP network clients, such as the version; allow remote authenticated administrators to inject arbitrary web script or HTML via (4) user names, (5) the cluster name; or allow RabbitMQ cluster administrators to (6) modify unspecified content.