EUVD-2026-30738Published
Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail to validate that a remote cluster has access to a channel before processing membership removal requests during shared channel membership sync, which allows a m…
Exact source revision recorded 5 Nov 2026 06:03:09 UTC. It does not establish the source's current position. Latest evidence.
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CVE-2026-28759 · Microsoft / collected KEV context
euvd · EUVD-2026-30738
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