Cross-site scripting (XSS) vulnerability in the management plugin in RabbitMQ 2.1.0 through 3.4.x before 3.4.1 allows remote attackers to inject arbitrary web script or HTML via the path info to api/, which is not properly handled in an error message.
https://groups.google.com/forum/#%21topic/rabbitmq-users/-3Z2FyGtXhs
http://www.securityfocus.com/bid/76084
http://www.rabbitmq.com/release-notes/README-3.4.1.txt