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
{
"versions": [
{
"introduced": "10.11.0"
},
{
"fixed": "10.11.7"
},
{
"introduced": "10.12.0"
},
{
"fixed": "10.12.3"
},
{
"introduced": "11.0.0"
},
{
"fixed": "11.0.5"
}
]
}