EUVD-2025-186556Published
Mattermost versions <11 fail to enforce multi-factor authentication on WebSocket connections which allows unauthenticated users to access sensitive information via WebSocket events
Exact source revision recorded 27 Oct 2026 22:53:50 UTC. It does not establish the source's current position. Latest evidence.
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CVE-2025-55070 · Microsoft / collected KEV context
euvd · EUVD-2025-186556
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