medium6.5
CVE-2025-12689
Mattermost fails to check Websocket request for proper UTF-8 format potentially crashing Calls plug-in
Impact
Mattermost versions 11.0.x <= 11.0.4, 10.12.x <= 10.12.2, 10.11.x <= 10.11.6 fail to check WebSocket request field for proper UTF-8 format, which allows attacker to crash Calls plug-in via sending malformed request.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/mattermost/mattermost-plugin-calls | < 1.11.0 | 1.11.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mattermost | Mattermost Server | from 10.11.0 before 10.11.7 from 10.12.0 before 10.12.3 from 11.0.0 before 11.0.5 |