CVE-2025-55074
Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11 fail to enforce access permissions on the Agents plugin which allows other users to determine when users had read channels via channel member objects
- CVSS 3.1
- 3.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N - EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 7% of CVEs (scores of 2026-10-25)
- Published
- Modified
- Record from
- the NVD, synced
Affected
- mattermost:mattermost_server
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-9hh7-6558-qfp2 | Go | github.com/mattermost/mattermost-server | >=10.11.0 <10.11.4 | 10.11.4 |
| GHSA-9hh7-6558-qfp2 | Go | github.com/mattermost/mattermost-server | >=10.5.0 <10.5.12 | 10.5.12 |
| GHSA-9hh7-6558-qfp2 | Go | github.com/mattermost/mattermost/server/v8 | <8.0.0-20250905150616-ba86dfc5876b6 | 8.0.0-20250905150616-ba86dfc5876b6 |
| GO-2025-4133 | Go | github.com/mattermost/mattermost-server | >=10.5.0+incompatible <10.5.12+incompatible >=10.11.0+incompatible <10.11.4+incompatible | 10.5.12+incompatible, 10.11.4+incompatible |
| GO-2025-4133 | Go | github.com/mattermost/mattermost-server/v5 | all versions | no fix published |
| GO-2025-4133 | Go | github.com/mattermost/mattermost-server/v6 | all versions | no fix published |
| GO-2025-4133 | Go | github.com/mattermost/mattermost/server/v8 | all versions | no fix published |