Go/github.com/mattermost/mattermost-server CVE-2025-27933: medium 5.4, EPSS 0.21%
Mattermost allows members with permission to convert public channels to private and convert private to public
Action: Upgrade github.com/mattermost/mattermost-server to 9.11.9 or later.
go get github.com/mattermost/mattermost-server@v9.11.9Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 9.11.9 | - |
Fixed versions
| 9.11.9 |
Sources
- osv: GHSA-h5v9-xw2g-7hrq#Go/github.com/mattermost/mattermost-server
- https://nvd.nist.gov/vuln/detail/CVE-2025-27933
- https://github.com/mattermost/mattermost
- https://mattermost.com/security-updates
CVE-2025-27933 · published · modified · JSON