Description
Mattermost versions 11.7.x <= 11.7.0, 10.11.x <= 10.11.17 fail to enforce bot-specific permission checks on the user active status endpoint, which allows a User Manager with user management write access but no Integrations access to deactivate bot accounts via the PUT /api/v4/users/{id}/active API endpoint.. Mattermost Advisory ID: MMSA-2026-00667
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mattermost | Mattermost | 11.7.0 – ≤ 11.7.0, 10.11.0 – ≤ 10.11.17 | 11.8.0 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/mattermost/mattermost-server | >= 11.7.0, < 11.7.1 | 11.7.1 | GHSA-g5vr-6pgg-74qv |
| Go | github.com/mattermost/mattermost-server | >= 10.11.0, < 10.11.18 | 10.11.18 | GHSA-g5vr-6pgg-74qv |
| Go | github.com/mattermost/mattermost-server | >= 10.11.0+incompatible, < 10.11.18+incompatible · >= 11.7.0+incompatible, < 11.7.1+incompatible | 10.11.18+incompatible, 11.7.1+incompatible | GO-2026-6481 |
Advisories 1
- WID-SEC-2026-1650 Mattermost (Desktop, Server und Mobile): Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 22, 2026
References
- MMSA-2026-00667 vendor-advisory