Description
Mattermost Desktop App versions <6.0.0 fail to enable the Hardened Runtime on the Mattermost Desktop App when packaged for Mac App Store which allows an attacker to inherit TCC permissions via copying the binary to a tmp folder.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mattermost | Mattermost | ≤ 6.0.0 | 6.0.0 |
Advisories 1
- WID-SEC-2025-2880 Mattermost Server und Desktop: Mehrere Schwachstellen BSI CERT-Bund (WID) · Feb 26, 2026