Mattermost Denial of Service Vulnerability

Mattermost is an open source collaboration platform from Mattermost, Inc. A denial of service vulnerability exists in Mattermost versions 6.2.0 and earlier, which stems from a failure to adequately process specially crafted GIF files when uploading them during post drafting, and could be exploited by an authenticated attacker to cause a server-side denial of service by running out of resources while processing the files. denial of service.