Improper Access Control in Mattermost Server versions 9.5.x before 9.5.2, 9.4.x before 9.4.4, 9.3.x before 9.3.3, 8.1.x before 8.1.11 lacked proper access control in the /api/v4/users/me/teams endpoint allowing a team admin to get the invite ID of their team, thus allowing them to invite users, even if the "Add Members" permission was explicitly removed from team admins.
{
"versions": [
{
"introduced": "8.1.0"
},
{
"fixed": "8.1.11"
},
{
"introduced": "9.3.0"
},
{
"fixed": "9.3.3"
},
{
"introduced": "9.4.0"
},
{
"fixed": "9.4.4"
},
{
"introduced": "9.5.0"
},
{
"fixed": "9.5.2"
}
]
}