Security Advisory

CVE-2025-12689

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2025-12-17 18:14:10

Last updated 2025-12-17 19:29:54

Assigner Mattermost

State PUBLISHED

Description

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.

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