CVE-2026-9824
EUVD-2026-4333913.07.2026, 11:16
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-2026-00676Enginsight
Affected Products (NVD)
| Vendor | Product | Version |
|---|---|---|
| mattermost | mattermost_server | 10.11.0 ≤ 𝑥 < 10.11.20 |
| mattermost | mattermost_server | 11.6.0 ≤ 𝑥 < 11.6.5 |
| mattermost | mattermost_server | 11.7.0 ≤ 𝑥 < 11.7.3 |
𝑥
= Vulnerable software versions
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
| Vendor | Product | Version | Source |
|---|---|---|---|
| mattermost | mattermost | 11.7.0 ≤ 𝑥 ≤ 11.7.2 | CNA |
| mattermost | mattermost | 11.6.0 ≤ 𝑥 ≤ 11.6.4 | CNA |
| mattermost | mattermost | 10.11.0 ≤ 𝑥 ≤ 10.11.19 | CNA |
Common Weakness Enumeration
References