Go/github.com/mattermost/mattermost-server/v6 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: No fix published. Pin and monitor.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | - | - |
Fixed versions
No fixed version in the source.
Sources
- osv: GO-2026-5512#Go/github.com/mattermost/mattermost-server/v6
- nvd: CVE-2026-3115
- https://github.com/advisories/GHSA-mpc7-mm28-f6wq
- https://mattermost.com/security-updates
CVE-2026-3115 · published · modified · JSON