Go/github.com/mattermost/mattermost-server/v6 CVE-2026-2458: medium 4.3, EPSS 0.17%
Mattermost allows a removed team member to enumerate all public channels within a private team 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-2026-4729#Go/github.com/mattermost/mattermost-server/v6
- nvd: CVE-2026-2458
- https://github.com/advisories/GHSA-679f-wmrg-qf57
- https://github.com/mattermost/mattermost/commit/a18b80ba4c324b74b3d47951c33957305af4a099
- https://mattermost.com/security-updates
CVE-2026-2458 · published · modified · JSON