CVE-2025-55074
Fixed in a distro release EPSS <1%CVSS 3.0
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
Products: Mattermost
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| Go | github.com/mattermost/mattermost-server | 10.11.4 |
| Go | github.com/mattermost/mattermost-server | 10.5.12 |
| Go | github.com/mattermost/mattermost-server | 10.5.12+incompatible |
| Go | github.com/mattermost/mattermost-server | 10.11.4+incompatible |
| Go | github.com/mattermost/mattermost-server/v5 | no fix |
| Go | github.com/mattermost/mattermost-server/v6 | no fix |
| Go | github.com/mattermost/mattermost/server/v8 | 8.0.0-20250905150616-ba86dfc5876b6 |
| Go | github.com/mattermost/mattermost/server/v8 | no fix |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| SUSE Linux Enterprise Module for Package Hub 15 SP6 | govulncheck-vulndb | 0.0.20251209T172047-150000.1.127.1 |
| openSUSE Leap 15.6 | govulncheck-vulndb | 0.0.20251209T172047-150000.1.127.1 |
| openSUSE Leap 16.0 | govulncheck-vulndb | 0.0.20260723T184607-160000.1.1 |