Mattermost versions <11 fail to properly restrict access to archived channel search API which allows guest users to discover archived public channels via the `/api/v4/teams/{team_id}/channels/search_archived` endpoint
Exact source revision recorded 27 Oct 2026 21:49:37 UTC. It does not establish the source's current position. Latest evidence.
euvd · EUVD-2025-186558
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datePublished: Nov 14, 2025, 7:58:52 AM
dateUpdated: Nov 14, 2025, 3:49:13 PM
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