Description
Mattermost versions 10.7.x <= 10.7.0, 10.6.x <= 10.6.2, 10.5.x <= 10.5.3, 9.11.x <= 9.11.12 fail to clear Google OAuth credentials when converting user accounts to bot accounts, allowing attackers to gain unauthorized access to bot accounts via the Google OAuth signup flow.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mattermost | Mattermost | 10.7.0, 10.6.0 – ≤ 10.6.2, 10.5.0 – ≤ 10.5.3, 9.11.0 – ≤ 9.11.12 | 10.8.0 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | govulncheck-vulndb | 0.0.20250612T141001-1.1 | openSUSE-SU-2025:15225-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/mattermost/mattermost-server | >= 9.0.0-rc1+incompatible, < 9.11.13+incompatible · >= 10.0.0-rc1+incompatible, < 10.5.4+incompatible · >= 10.6.0-rc1+incompatible, < 10.6.3+incompatible · >= 10.7.0-rc1+incompatible, < 10.7.1+incompatible | 9.11.13+incompatible, 10.5.4+incompatible, 10.6.3+incompatible, 10.7.1+incompatible | GO-2025-3729 |
| Go | github.com/mattermost/mattermost-server/v5 | all versions | — | GO-2025-3729 |
| Go | github.com/mattermost/mattermost-server/v6 | all versions | — | GO-2025-3729 |
| Go | github.com/mattermost/mattermost/server/v8 | >= 10.7.0-rc1, < 10.7.1 | 10.7.1 | GHSA-8cgx-9ccj-3gwr |
| Go | github.com/mattermost/mattermost/server/v8 | >= 10.0.0-rc1, < 10.5.4 | 10.5.4 | GHSA-8cgx-9ccj-3gwr |
| Go | github.com/mattermost/mattermost/server/v8 | >= 9.0.0-rc1, < 9.11.13 | 9.11.13 | GHSA-8cgx-9ccj-3gwr |
| Go | github.com/mattermost/mattermost/server/v8 | < 8.0.0-20250414095146-04676582cdd2 | 8.0.0-20250414095146-04676582cdd2 | GHSA-8cgx-9ccj-3gwr |
| Go | github.com/mattermost/mattermost/server/v8 | >= 10.6.0-rc1, < 10.6.3 | 10.6.3 | GHSA-8cgx-9ccj-3gwr |
Advisories 2
- openSUSE-SU-2025:15225-1 govulncheck-vulndb-0.0.20250612T141001-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- WID-SEC-2025-0905 Mattermost: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 11, 2025