Denial Of Service (DoS)

github.com/mattermost/mattermost-plugin-calls is vulnerable to Denial Of Service. The vulnerability due to function isMobilePostGA in utils.go there is no check for the length of fields after it splits the User-Agent string. This allows an attacker to send a request without a User-Agent header, which attempt to access an index of an empty slice, it leads to a panic in the application and result a Crash/Denial Of Service.