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,
"github_reviewed_at": "2025-09-19T23:05:09Z",
"nvd_published_at": "2025-09-19T20:15:40Z",
"severity": "HIGH",
"cwe_ids": [
"CWE-22"
]
}