CVSS 3.1
3.1 lowCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:NCVE-2025-6227
Low (3.1) in mattermost mattermost server. EPSS 0.2% chance of exploitation in the next 30 days. Fixed in github.com/mattermost/mattermost-server 10.5.8, 10.5.8+incompatible, 9.11.17.
Mattermost versions 10.5.x <= 10.5.7, 9.11.x <= 9.11.16 fail to negotiate a new token when accepting the invite which allows a user that intercepts both invite and password to send synchronization payloads to the server that originally created the invite via the REST API.
Severity
- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 12% of CVEs (scores of 2026-10-31)
- CWE
- CWE-522
- Published
- Modified
- Record from
- the NVD, synced
Affected
- mattermost:mattermost_server
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-4fwj-8595-wp25 | Go | github.com/mattermost/mattermost-server | >=10.5.0 <10.5.8 | 10.5.8 |
| GHSA-4fwj-8595-wp25 | Go | github.com/mattermost/mattermost-server | >=9.11.0 <9.11.17 | 9.11.17 |
| GHSA-4fwj-8595-wp25 | Go | github.com/mattermost/mattermost/server/v8 | <8.0.0-20250612074655-8f8612c63783 | 8.0.0-20250612074655-8f8612c63783 |
| GO-2025-3818 | Go | github.com/mattermost/mattermost-server | >=9.11.0+incompatible <9.11.17+incompatible >=10.5.0+incompatible <10.5.8+incompatible | 9.11.17+incompatible, 10.5.8+incompatible |
| GO-2025-3818 | Go | github.com/mattermost/mattermost-server/v5 | all versions | no fix published |
| GO-2025-3818 | Go | github.com/mattermost/mattermost-server/v6 | all versions | no fix published |
| GO-2025-3818 | Go | github.com/mattermost/mattermost/server/v8 | <8.0.0-20250612074655-8f8612c63783 | 8.0.0-20250612074655-8f8612c63783 |