CVSS 3.1
4.9 mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:HCVE-2025-8402
Medium (4.9) in mattermost mattermost server. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in github.com/mattermost/mattermost-server 10.10.1, 10.10.1+incompatible, 10.5.9.
Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.10.x <= 10.10.0, 10.9.x <= 10.9.3 fail to validate import data which allows a system admin to crash the server via the bulk import feature.
Severity
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 25% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-476, CWE-1287
- Published
- Modified
- Record from
- the NVD, synced
Affected
- mattermost:mattermost_server
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-h469-4fcf-p23h | Go | github.com/mattermost/mattermost-server | >=10.8.0 <10.8.4 | 10.8.4 |
| GHSA-h469-4fcf-p23h | Go | github.com/mattermost/mattermost-server | >=10.5.0 <10.5.9 | 10.5.9 |
| GHSA-h469-4fcf-p23h | Go | github.com/mattermost/mattermost-server | >=10.9.0 <10.9.4 | 10.9.4 |
| GHSA-h469-4fcf-p23h | Go | github.com/mattermost/mattermost-server | >=10.10.0 <10.10.1 | 10.10.1 |
| GHSA-h469-4fcf-p23h | Go | github.com/mattermost/mattermost/server/v8 | <8.0.0-20250708173752-d6b35c41f0ae5 | 8.0.0-20250708173752-d6b35c41f0ae5 |
| GHSA-h469-4fcf-p23h | Go | github.com/mattermost/mattermost-server | >=9.11.0 <9.11.18 | 9.11.18 |
| GHSA-h469-4fcf-p23h | Go | github.com/mattermost/mattermost-server/v5 | <=5.39.3 | no fix published |
| GHSA-h469-4fcf-p23h | Go | github.com/mattermost/mattermost-server/v6 | <=6.7.2 | no fix published |
| GO-2025-3911 | Go | github.com/mattermost/mattermost-server | >=9.11.0+incompatible <9.11.18+incompatible >=10.5.0+incompatible <10.5.9+incompatible >=10.8.0+incompatible <10.8.4+incompatible >=10.9.0+incompatible <10.9.4+incompatible >=10.10.0+incompatible <10.10.1+incompatible | 9.11.18+incompatible, 10.5.9+incompatible, 10.8.4+incompatible, 10.9.4+incompatible, 10.10.1+incompatible |
| GO-2025-3911 | Go | github.com/mattermost/mattermost-server/v5 | all versions | no fix published |
| GO-2025-3911 | Go | github.com/mattermost/mattermost-server/v6 | all versions | no fix published |
| GO-2025-3911 | Go | github.com/mattermost/mattermost/server/v8 | all versions | no fix published |