CVE-2025-9081
Mattermost versions 10.5.x <= 10.5.8, 9.11.x <= 9.11.17 fail to properly validate access controls which allows any authenticated user to download sensitive files via board file download endpoint using UUID enumeration
- CVSS 3.1
- 6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 19% of CVEs (scores of 2026-10-25)
- CWE
- CWE-639
- Published
- Modified
- Record from
- the NVD, synced
Affected
- mattermost:mattermost_server
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-f72g-52v7-mg3p | Go | github.com/mattermost/mattermost-plugin-boards | <0.0.0-20250716054606-3f3e3becfe1d | 0.0.0-20250716054606-3f3e3becfe1d |
| GHSA-f72g-52v7-mg3p | Go | github.com/mattermost/mattermost/server/v8 | <8.0.0-20250721095935-11c36f4d1e44 | 8.0.0-20250721095935-11c36f4d1e44 |
| GHSA-f72g-52v7-mg3p | Go | github.com/mattermost/mattermost-server | >=10.5.0-rc1 <10.5.9 | 10.5.9 |
| GHSA-f72g-52v7-mg3p | Go | github.com/mattermost/mattermost-server | >=9.11.0-rc1 <9.11.18 | 9.11.18 |
| GO-2025-3978 | Go | github.com/mattermost/mattermost-plugin-boards | <0.0.0-20250716054606-3f3e3becfe1d | 0.0.0-20250716054606-3f3e3becfe1d |
| GO-2025-3978 | Go | github.com/mattermost/mattermost-server | >=9.11.0-rc1+incompatible <9.11.18+incompatible >=10.5.0-rc1+incompatible <10.5.9+incompatible | 9.11.18+incompatible, 10.5.9+incompatible |
| GO-2025-3978 | Go | github.com/mattermost/mattermost-server/v5 | all versions | no fix published |
| GO-2025-3978 | Go | github.com/mattermost/mattermost-server/v6 | all versions | no fix published |
| GO-2025-3978 | Go | github.com/mattermost/mattermost/server/v8 | <8.0.0-20250721095935-11c36f4d1e44 | 8.0.0-20250721095935-11c36f4d1e44 |