Mattermost versions 10.5.x <= 10.5.8 fail to validate access controls at time of access which allows user to read a thread via AI posts
{ "github_reviewed_at": "2025-08-21T16:02:54Z", "severity": "LOW", "cwe_ids": [ "CWE-863" ], "nvd_published_at": "2025-08-21T08:15:30Z", "github_reviewed": true }