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GHSA-j5vq-62gr-8v3r

Mattermost fails to check Websocket request for proper UTF-8 format potentially crashing Calls plug-in

Source: GitHub Advisory Database (reviewed) Moderate CVE-2025-12689

Packages

EcosystemPackageAffectedFixed in
Go github.com/mattermost/mattermost-plugin-calls < 1.11.0 1.11.0

Details

As written in the advisory (Markdown source, shown as plain text).

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.

References

External links from the advisory. They lead to third-party sites.