medium4.3
CVE-2025-6465
Mattermost Fails to Sanitize File Names
Impact
Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 10.10.x <= 10.10.0, 10.9.x <= 10.9.3 fail to sanitize file names which allows users with file upload permission to overwrite file attachment thumbnails via path traversal in file streaming APIs.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/mattermost/mattermost-server | >= 10.8.0, <= 10.8.3 | 10.8.4 |
| go | github.com/mattermost/mattermost/server/v8 | < 8.0.0-20250708173752-d6b35c41f0ae5 | 8.0.0-20250708173752-d6b35c41f0ae5 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mattermost | Mattermost Server | from 10.5.0 before 10.5.9 from 10.8.0 before 10.8.4 from 10.9.0 before 10.9.4 Version 10.10.0 |