An issue was discovered in Wowza Streaming Engine before 4.7.1. There is an XSS vulnerability in the HTTP providers (com.wowza.wms.http.HTTPProviderMediaList and com.wowza.wms.http.streammanager.HTTPStreamManager) causing script injection and/or reflection via a crafted HTTP request.
https://www.wowza.com/docs/wowza-streaming-engine-4-7-1-release-notes