CVE-2025-12689
published 2025-12-17CVE-2025-12689: 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…
medium6.5CVSS 3.1
AVNACLPRLUINSUCNINAH
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
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| github.com | mattermost_mattermost-plugin-calls | >= 0 < 1.11.0 | 1.11.0 |
| mattermost | mattermost | 10.11.0 – 10.11.6 | — |
| mattermost | mattermost | 10.12.0 – 10.12.2 | — |
| mattermost | mattermost | 11.0.0 – 11.0.4 | — |
| mattermost | mattermost_server | >= 10.11.0 < 10.11.7 | 10.11.7 |
| mattermost | mattermost_server | >= 10.12.0 < 10.12.3 | 10.12.3 |
| mattermost | mattermost_server | >= 11.0.0 < 11.0.5 | 11.0.5 |