Go/github.com/mattermost/mattermost/server/v8 CVE-2026-3115: medium 4.3, EPSS 0.24%
Mattermost allows authenticated guest users to enumerate user IDs outside their allowed visibility scope in github.com/mattermost/mattermost-server
Action: Upgrade github.com/mattermost/mattermost/server/v8 to 8.0.0-20260217110922-b7d4a1f1f59b or later.
go get github.com/mattermost/mattermost/server/v8@v8.0.0-20260217110922-b7d4a1f1f59bAffected
| introduced | fixed | last affected |
|---|---|---|
| 8.0.0-20260105080200-d27a2195068d | 8.0.0-20260217110922-b7d4a1f1f59b | - |
Fixed versions
| 8.0.0-20260217110922-b7d4a1f1f59b |
Sources
- osv: GO-2026-5512#Go/github.com/mattermost/mattermost/server/v8
- nvd: CVE-2026-3115
- https://github.com/advisories/GHSA-mpc7-mm28-f6wq
- https://mattermost.com/security-updates
CVE-2026-3115 · published · modified · JSON