Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3, 10.11.x <= 10.11.7 fail to verify that post actions invoking /share-issue-publicly were created by the Jira plugin which allowed a malicious Mattermost user to exfiltrate Jira tickets when victim users interacted with affected posts
{
"versions": [
{
"introduced": "10.11.0"
},
{
"fixed": "10.11.8"
},
{
"introduced": "10.12.0"
},
{
"fixed": "10.12.4"
},
{
"introduced": "11.0.0"
},
{
"fixed": "11.0.6"
},
{
"introduced": "11.1.0"
},
{
"fixed": "11.1.1"
}
]
}