medium6.8
CVE-2025-36530
Mattermost Fails to Validate File Paths
Impact
Mattermost versions 10.9.x <= 10.9.1, 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17 fail to properly validate file paths during plugin import operations which allows restricted admin users to install unauthorized custom plugins via path traversal in the import functionality, bypassing plugin signature enforcement and marketplace restrictions.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/mattermost/mattermost-server | >= 10.9.0, <= 10.9.1 | 10.9.2 |
| go | github.com/mattermost/mattermost/server/v8 | < 8.0.0-20250619095651-9dd0b3943e55 | 8.0.0-20250619095651-9dd0b3943e55 |
| go | github.com/mattermost/mattermost-server/v5 | <= 5.11.1 | none recorded |
| go | github.com/mattermost/mattermost-server/v6 | <= 6.7.2 | none recorded |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mattermost | Mattermost Server | from 9.11.0 before 9.11.18 from 10.5.0 before 10.5.9 from 10.8.0 before 10.8.4 from 10.9.0 before 10.9.2 |