Mattermost versions 10.5.x <= 10.5.1, 10.4.x <= 10.4.3, 9.11.x <= 9.11.9 fail to properly enforce the 'Allow users to view/update archived channels' System Console setting, which allows authenticated users to view members and member information of archived channels even when this setting is disabled.
2025-04-16T17:15:49.717
2025-09-29T21:13:11.830
Analyzed
CVSSv3.1: 4.3 (MEDIUM)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | mattermost | mattermost_server | < 9.11.10 | Yes |
| Application | mattermost | mattermost_server | < 10.4.4 | Yes |
| Application | mattermost | mattermost_server | < 10.5.2 | Yes |