CVE-2025-12559
Fixed in a distro release EPSS <1%CVSS 4.3
Mattermost versions 11.0.x <= 11.0.2, 10.12.x <= 10.12.1, 10.11.x <= 10.11.4, 10.5.x <= 10.5.12 fail to sanitize team email addresses to be visible only to Team Admins, which allows any authenticated user to view team email addresses via the GET /api/v4/channels/{channel_id}/common_teams endpoint
Products: Mattermost
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| Go | github.com/mattermost/mattermost-server | 11.0.3 |
| Go | github.com/mattermost/mattermost-server | 10.12.2 |
| Go | github.com/mattermost/mattermost-server | 10.11.5 |
| Go | github.com/mattermost/mattermost-server | 10.5.13 |
| Go | github.com/mattermost/mattermost-server | no fix |
| Go | github.com/mattermost/mattermost-server/v5 | no fix |
| Go | github.com/mattermost/mattermost-server/v6 | no fix |
| Go | github.com/mattermost/mattermost/server/v8 | 8.0.0-20251015091448-abbf01b9db45 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| openSUSE Leap 15.6 | govulncheck-vulndb | 0.0.20251230T014957-150000.1.134.1 |
| openSUSE Leap 16.0 | govulncheck-vulndb | 0.0.20260723T184607-160000.1.1 |