Go/github.com/mattermost/mattermost-server CVE-2026-27769: low 2.7, EPSS 0.17%
Mattermost doesn't validate whether users were correctly owned by the correct Connected Workspace
Action: Upgrade github.com/mattermost/mattermost-server to 8.0.0-20260316060126-bc1a2b34b1f9 or later.
go get github.com/mattermost/mattermost-server@v8.0.0-20260316060126-bc1a2b34b1f9Affected
| introduced | fixed | last affected |
|---|---|---|
| 8.0.0-20250721062209-4952acea88ce | 8.0.0-20260316060126-bc1a2b34b1f9 | - |
Fixed versions
| 8.0.0-20260316060126-bc1a2b34b1f9 |
Sources
- osv: GHSA-mxxh-fmjq-j6x4
- https://nvd.nist.gov/vuln/detail/CVE-2026-27769
- https://github.com/mattermost/mattermost
- https://mattermost.com/security-updates
CVE-2026-27769 · published · modified · JSON