Security Advisory

CVE-2026-9824

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-07-13 10:47:33

Last updated 2026-07-13 13:10:35

Assigner Mattermost

CVSS score 4.3

State PUBLISHED

Description

Mattermost versions 11.7.x <= 11.7.2, 11.6.x <= 11.6.4, 10.11.x <= 10.11.19 fail to check the manage_shared_channels permission in the /share-channel autocomplete handler, which allows an authenticated user without that permission to enumerate configured remote cluster connection metadata via slash command autocomplete.. Mattermost Advisory ID: MMSA-2026-00676

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