### [CVE-2019-20847](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20847)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

An issue was discovered in Mattermost Server before 5.18.0. An attacker can send a user_typing WebSocket event to any channel.

### POC

#### Reference
- https://mattermost.com/security-updates/
- https://mattermost.com/security-updates/

#### Github
No PoCs found on GitHub currently.