CVSS 3.1
4.3 mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NCVE-2025-4128
Medium (4.3) in mattermost mattermost server. EPSS 0.2% chance of exploitation in the next 30 days. Fixed in github.com/mattermost/mattermost/server/v8 8.0.0-20250422131222-701ddc896a10.
Mattermost versions 10.5.x <= 10.5.4, 9.11.x <= 9.11.13 fail to properly restrict API access to team information, allowing guest users to bypass permissions and view information about public teams they are not members of via a direct API call to /api/v4/teams/{team_id}.
Severity
- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 12% of CVEs (scores of 2026-10-31)
- CWE
- CWE-863
- Published
- Modified
- Record from
- the NVD, synced
Affected
- mattermost:mattermost_server
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-jwhw-xf5v-qgxc | Go | github.com/mattermost/mattermost/server/v8 | <8.0.0-20250422131222-701ddc896a10 | 8.0.0-20250422131222-701ddc896a10 |
| GHSA-jwhw-xf5v-qgxc | Go | github.com/mattermost/mattermost-server | >=10.5.0 <10.5.5 | 10.5.5 |
| GHSA-jwhw-xf5v-qgxc | Go | github.com/mattermost/mattermost-server | >=9.11.0 <9.11.14 | 9.11.14 |
| GO-2025-3757 | Go | github.com/mattermost/mattermost-server | >=9.11.0+incompatible <9.11.14+incompatible >=10.5.0+incompatible <10.5.5+incompatible | 9.11.14+incompatible, 10.5.5+incompatible |
| GO-2025-3757 | Go | github.com/mattermost/mattermost-server/v5 | all versions | no fix published |
| GO-2025-3757 | Go | github.com/mattermost/mattermost-server/v6 | all versions | no fix published |
| GO-2025-3757 | Go | github.com/mattermost/mattermost/server/v8 | <8.0.0-20250422131222-701ddc896a10 | 8.0.0-20250422131222-701ddc896a10 |