Mattermost versions 10.8.x <= 10.8.1, 10.7.x <= 10.7.3, 10.5.x <= 10.5.7, 9.11.x <= 9.11.16 fail to sanitize input paths of file attachments in the bulk import JSONL file, which allows a system admin to read arbitrary system files via path traversal.
{ "severity": "MODERATE", "cwe_ids": [ "CWE-22" ], "github_reviewed_at": "2025-07-21T18:39:07Z", "nvd_published_at": "2025-07-18T10:15:34Z", "github_reviewed": true }