Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.10.x <= 10.10.1, 10.9.x <= 10.9.3 fail to validate import directory path configuration which allows admin users to execute arbitrary code via malicious plugin upload to prepackaged plugins directory
{ "github_reviewed": true, "cwe_ids": [ "CWE-22" ], "severity": "HIGH", "github_reviewed_at": "2025-09-19T23:05:09Z", "nvd_published_at": "2025-09-19T20:15:40Z" }