CVE-2025-8402
Mattermost has Potential Server Crash due to Unvalidated Import Data in github.com/mattermost/mattermost-server
Description
Mattermost has Potential Server Crash due to Unvalidated Import Data in github.com/mattermost/mattermost-server. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. (If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.) The additional affected modules and versions are: github.com/mattermost/mattermost/server/v8 before v8.0.0-20250708173752-d6b35c41f0ae5.
How to fix CVE-2025-8402
To remediate CVE-2025-8402, upgrade the affected package to a fixed version below.
- —upgrade to 10.8.4 or later
- —upgrade to 9.11.18+incompatible or later
- —no fix listed
- —no fix listed
- —no fix listed
- —no fix listed
- —upgrade to 8.0.0-20250708173752-d6b35c41f0ae5 or later
- —no fix listed
Is CVE-2025-8402 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (8)
- >= 10.8.0, < 10.8.4
- >= 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
- from 0
- from 0, <= 5.39.3
- from 0, <= 6.7.2
- from 0
- from 0, < 8.0.0-20250708173752-d6b35c41f0ae5
- from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H |