CVE-2026-9824 — Remote cluster metadata enumeration via /share-channel autocomplete
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…
Published: 2026-07-13 · CVSS: 4.3 · CVSS 3.1
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
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7