Mattermost versions 9.10.x <= 9.10.2, 9.11.x <= 9.11.1, 9.5.x <= 9.5.9 fail to sanitize user inputs in the frontend that are used for redirection which allows for a one-click client-side path traversal that is leading to CSRF in Playbooks
{
"versions": [
{
"introduced": "9.5.0"
},
{
"last_affected": "9.5.9"
},
{
"introduced": "9.10.0"
},
{
"last_affected": "9.10.2"
},
{
"introduced": "9.11.0"
},
{
"last_affected": "9.11.1"
}
]
}