Description
Mattermost versions 9.11.x <= 9.11.5 fail to enforce invite permissions, which allows team admins, with no permission to invite users to their team, to invite users by updating the "allow_open_invite" field via making their team public.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mattermost | Mattermost | 9.11.0 – ≤ 9.11.5 | 10.3.0 |
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.
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | govulncheck-vulndb | 0.0.20250128T150132-150000.1.29.1 | SUSE-SU-2025:0297-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | govulncheck-vulndb | 0.0.20250109T194159-1.1 | openSUSE-SU-2025:14644-1 |
| openSUSE Leap 15.6 | govulncheck-vulndb | 0.0.20250128T150132-150000.1.29.1 | SUSE-SU-2025:0297-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/mattermost/mattermost-server | >= 9.11.0+incompatible | — | GO-2025-3377 |
| Go | github.com/mattermost/mattermost-server/v5 | all versions | — | GO-2025-3377 |
| Go | github.com/mattermost/mattermost-server/v6 | all versions | — | GO-2025-3377 |
| Go | github.com/mattermost/mattermost/server/v8 | >= 9.11.0, < 9.11.6 | 9.11.6 | GHSA-q8fg-cp3q-5jwm |
| Go | github.com/mattermost/mattermost/server/v8 | < 8.0.0-20250102081831-64c566a8280b | 8.0.0-20250102081831-64c566a8280b | GHSA-q8fg-cp3q-5jwm |
Advisories 3
- SUSE-SU-2025:0297-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Feb 5, 2026
- openSUSE-SU-2025:14644-1 govulncheck-vulndb-0.0.20250109T194159-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2024-3687 Mattermost: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff BSI CERT-Bund (WID) · Jan 15, 2025