Mattermost has CSRF vulnerability via Calls Widget page

Mattermost versions 11.0.x < 11.0.4, 10.12.x <= 10.12.2, 10.11.x < 10.11.6 and Mattermost Calls versions < 1.10.0 fail to implement CSRF protection on the Calls widget page which allows an authenticated attacker to initiate calls and inject messages into channels or direct messages via a malicious webpage or crafted link.