An issue was discovered in Mattermost Server before 5.16.1, 5.15.2, 5.14.5, and 5.9.6. It allows attackers to obtain sensitive information (local files) during legacy attachment migration.
{
"versions": [
{
"introduced": "0"
},
{
"fixed": "5.9.6"
},
{
"introduced": "5.14.0"
},
{
"fixed": "5.14.5"
},
{
"introduced": "5.15.0"
},
{
"fixed": "5.15.2"
},
{
"introduced": "5.16.0"
},
{
"fixed": "5.16.1"
}
]
}