Mattermost versions 10.0.x <= 10.0.1, 10.1.x <= 10.1.1, 9.11.x <= 9.11.3, 9.5.x <= 9.5.11 fail to properly validate email addresses which allows an unauthenticated user to bypass email domain restrictions via carefully crafted input on email registration.
{
"versions": [
{
"introduced": "9.5.0"
},
{
"fixed": "9.5.12"
},
{
"introduced": "9.11.0"
},
{
"fixed": "9.11.4"
},
{
"introduced": "10.0.0"
},
{
"fixed": "10.0.2"
},
{
"introduced": "10.1.0"
},
{
"fixed": "10.1.2"
}
]
}