CVE-2025-6233

Arbitrary file read by system admin via path traversal

Published Jul 18, 2025 CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

Vendor Solution

Update Mattermost to versions 10.9.0, 10.8.2, 10.7.4, 10.5.8, 9.11.17 or higher.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-21866 Mattermost Path Traversal vulnerability
Github GHSA Github GHSA GHSA-wvw2-3jh4-4c39 Mattermost Path Traversal vulnerability
References
History
Type Values Removed Values Added
First Time appeared Mattermost mattermost Server
CPEs cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
Vendors & Products Mattermost mattermost Server
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title Arbitrary file read by system admin via path traversal
Weaknesses CWE-22
References
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Mattermost
Published
Updated
Jul 18, 2025, 12:30 PM
Reserved
Jun 18, 2025, 1:06 PM
Status
Analyzed
Published
Jul 18, 2025, 10:15 AM
Modified
Jun 17, 2026, 10:01 AM