CVE-2025-3227
Medium
Description
Mattermost versions 10.5.x <= 10.5.5, 9.11.x <= 9.11.15, 10.8.x <= 10.8.0, 10.7.x <= 10.7.2, 10.6.x <= 10.6.5 fail to properly enforce channel member management permissions in playbook runs, allowing authenticated users without the 'Manage Channel Members' permission to add or remove users from public and private channels by manipulating playbook run participants when the run is linked to a channel.
SeverityMedium
CVSS4.3
Exploit probability—
Product
Mattermost Server
PublishedJun 20, 2025
First seenJun 20, 2025
Weakness typeCWE-863Incorrect authorization
How to fix
Update
- mattermost mattermost_server9.11.16, 10.5.6, 10.6.6, 10.7.3 or later
- github.com/mattermost/mattermost-server0.0.0-20250520060012-d0380305ef7a, 9.11.16+incompatible, 10.5.6+incompatible, 10.6.6+incompatible, 10.7.3+incompatible, 10.8.1+incompatible or later
- github.com/mattermost/mattermost/server/v88.0.0-20250520060012-d0380305ef7a, 10.5.6, 9.11.16, 10.8.1, 10.7.3, 10.6.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mattermost mattermost_server | 9.11.0 ≤ v < 9.11.16, 10.5.0 ≤ v < 10.5.6, 10.6.0 ≤ v < 10.6.6, 10.7.0 ≤ v < 10.7.3, 10.8.0 | 9.11.16, 10.5.6, 10.6.6, 10.7.3 |
| github.com/mattermost/mattermost-serverGo | v < 0.0.0-20250520060012-d0380305ef7a, 9.11.0+incompatible ≤ v < 9.11.16+incompatible, 10.5.0+incompatible ≤ v < 10.5.6+incompatible, 10.6.0+incompatible ≤ v < 10.6.6+incompatible, 10.7.0+incompatible ≤ v < 10.7.3+incompatible, 10.8.0+incompatible ≤ v < 10.8.1+incompatible | 0.0.0-20250520060012-d0380305ef7a, 9.11.16+incompatible, 10.5.6+incompatible, 10.6.6+incompatible, 10.7.3+incompatible, 10.8.1+incompatible |
| github.com/mattermost/mattermost/server/v8Go | v < 8.0.0-20250520060012-d0380305ef7a, 10.5.0 ≤ v < 10.5.6, 9.11.0 ≤ v < 9.11.16, 10.8.0 ≤ v < 10.8.1, 10.7.0 ≤ v < 10.7.3, 10.6.0 ≤ v < 10.6.6 | 8.0.0-20250520060012-d0380305ef7a, 10.5.6, 9.11.16, 10.8.1, 10.7.3, 10.6.6 |
| github.com/mattermost/mattermost-server/v5Go | No range specified | — |
| github.com/mattermost/mattermost-server/v6Go | No range specified | — |
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