A Cross-Site Request Forgery (CSRF) vulnerability in Wowza Streaming Engine through 4.8.11+5 allows a remote attacker to delete a user account via the /enginemanager/server/user/delete.htm userName parameter. The application does not implement a CSRF token for the GET request. This issue was resolved in Wowza Streaming Engine release 4.8.14.
https://www.wowza.com/docs/wowza-streaming-engine-4-8-14-release-notes
https://www.gruppotim.it/redteam
https://n4nj0.github.io/advisories/wowza-streaming-engine-i/