Description
Mattermost Mobile Apps versions <=2.32.0 fail to verify that SSO redirect tokens originate from the trusted server, which allows a malicious Mattermost instance or on-path attacker to obtain user session credentials via crafted token-in-URL responses
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mattermost | Mattermost | ≤ 2.32.0 | 2.33.0 |
Advisories 1
- WID-SEC-2025-2315 Mattermost Server und Mobile: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 27, 2025