Wowza Streaming Engine 4.7.4.01 allows traversal of the directory structure and retrieval of a file via a remote, specifically crafted HTTP request to the REST API.
View the template here CVE-2018-19365.yaml
References:
https://blog.gdssecurity.com/labs/2019/2/11/wowza-streaming-engine-manager-directory-traversal-and-local.html