CVEvulnerability

CVE-2026-9824

4.3 MEDIUM Published 2026-07-13 Modified 2026-07-13 Official page ↗
Status
Analyzed
Published
2026-07-13
Last modified
2026-07-13
Assigner
[email protected]
CVSS 3.1 ([email protected])
4.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weaknesses
CWE-862

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

Affected configurations

• mattermost mattermost server (>= 10.11.0 < 10.11.20) • mattermost mattermost server (>= 11.6.0 < 11.6.5) • mattermost mattermost server (>= 11.7.0 < 11.7.3)

Related

Weakness · CWE (1)

  • CWE-862 Missing Authorization weakness

References