Vulnerability · Published Apr 16, 2025 · Assigned by Mattermost
CVE-2025-27571Channel metadata visible in archived channels despite configuration setting
Medium 4.3
In plain English
A medium-severity incorrect authorization in Mattermost from Mattermost. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/mattermost/mattermost-server | 10.4.4+incompatible, 10.5.2+incompatible, 9.11.10+incompatible | GO-2025-3619 |
| Go | github.com/mattermost/mattermost-server/v5 | no fix listed | GO-2025-3619 |
| Go | github.com/mattermost/mattermost-server/v6 | no fix listed | GO-2025-3619 |
| Go | github.com/mattermost/mattermost/server/v8 | 8.0.0-20250314142426-c049748b8863 | GHSA-h4rr-f37j-4hh7 |
| Go | github.com/mattermost/mattermost/server/v8 | 10.5.2 | GHSA-h4rr-f37j-4hh7 |
| Go | github.com/mattermost/mattermost/server/v8 | 8.0.0-20250218121836-2b5275d87136 | GO-2025-3619 |
| Go | github.com/mattermost/mattermost/server/v8 | 10.4.4 | GHSA-h4rr-f37j-4hh7 |
| Go | github.com/mattermost/mattermost/server/v8 | 9.11.10 | GHSA-h4rr-f37j-4hh7 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mattermost | Mattermost | 10.5.0 – through 10.5.110.4.0 – through 10.4.39.11.0 – through 9.11.9 |
Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N