CVE-2025-12689
Mattermost fails to check Websocket request for proper UTF-8 format potentially crashing Calls plug-in in github.com/mattermost/mattermost-plugin-calls
6.5
MEDIUM
CVSS 3.1
EPSS 0.09%
Description
Mattermost fails to check Websocket request for proper UTF-8 format potentially crashing Calls plug-in in github.com/mattermost/mattermost-plugin-calls
How to fix CVE-2025-12689
To remediate CVE-2025-12689, upgrade the affected package to a fixed version below.
- —upgrade to 1.11.0 or later
- —upgrade to 1.11.0 or later
Is CVE-2025-12689 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1.11.0
- from 0, < 1.11.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |