CVE-2025-27571
Medium
Description
Mattermost versions 10.5.x <= 10.5.1, 10.4.x <= 10.4.3, 9.11.x <= 9.11.9 fail to check the "Allow Users to View Archived Channels" configuration when fetching channel metadata of a post from archived channels, which allows authenticated users to access such information when a channel is archived.
SeverityMedium
CVSS4.3
Exploit probability—
Product
Mattermost Server
PublishedApr 16, 2025
First seenApr 16, 2025
Weakness typeCWE-863Incorrect authorization
How to fix
Update
- mattermost mattermost_server9.11.10, 10.4.4, 10.5.2 or later
- github.com/mattermost/mattermost/server/v810.5.2, 10.4.4, 9.11.10, 8.0.0-20250314142426-c049748b8863, 8.0.0-20250218121836-2b5275d87136 or later
- github.com/mattermost/mattermost-server9.11.10+incompatible, 10.4.4+incompatible, 10.5.2+incompatible or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mattermost mattermost_server | 9.11.0 ≤ v < 9.11.10, 10.4.0 ≤ v < 10.4.4, 10.5.0 ≤ v < 10.5.2 | 9.11.10, 10.4.4, 10.5.2 |
| github.com/mattermost/mattermost/server/v8Go | 10.5.0 ≤ v < 10.5.2, 10.4.0 ≤ v < 10.4.4, 9.11.0 ≤ v < 9.11.10, v < 8.0.0-20250314142426-c049748b8863, v < 8.0.0-20250218121836-2b5275d87136 | 10.5.2, 10.4.4, 9.11.10, 8.0.0-20250314142426-c049748b8863, 8.0.0-20250218121836-2b5275d87136 |
| github.com/mattermost/mattermost-serverGo | 9.11.0+incompatible ≤ v < 9.11.10+incompatible, 10.4.0+incompatible ≤ v < 10.4.4+incompatible, 10.5.0+incompatible ≤ v < 10.5.2+incompatible | 9.11.10+incompatible, 10.4.4+incompatible, 10.5.2+incompatible |
| github.com/mattermost/mattermost-server/v5Go | No range specified | — |
| github.com/mattermost/mattermost-server/v6Go | No range specified | — |
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