Description
Mattermost Desktop App versions <6.0.0 fail to sanitize sensitive information from Mattermost logs and clear data on server deletion which allows an attacker with access to the users system to gain access to potentially sensitive information via reading the application logs.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mattermost | Mattermost | ≤ 6.0.0 | 6.0.0 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | mattermost-desktop | <= 3.6.0 | — | GHSA-g6qx-wq5w-wr8v |
Advisories 1
- WID-SEC-2025-2880 Mattermost Server und Desktop: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 26, 2026