CVE-2025-55074
Low · 3.0Mattermost allows other users to determine when users had read channels via channel member objects
CVSS
3.0
EPSS
0.2%
Published
Nov 18, 2025
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Go | github.com/mattermost/mattermost-server | 10.11.0 | 10.11.4 |
| Go | github.com/mattermost/mattermost-server | 10.5.0 | 10.5.12 |
| Go | github.com/mattermost/mattermost-server | 10.5.0+incompatible | 10.5.12+incompatible |
| Go | github.com/mattermost/mattermost-server/v5 | 0 | No fix |
| Go | github.com/mattermost/mattermost-server/v6 | 0 | No fix |
| Go | github.com/mattermost/mattermost/server/v8 | 0 | 8.0.0-20250905150616-ba86dfc5876b6 |
| Go | github.com/mattermost/mattermost/server/v8 | 0 | No fix |
| SUSE:Linux Enterprise Module for Package Hub 15 SP6 | govulncheck-vulndb | 0 | 0.0.20251209T172047-150000.1.127.1 |
| go | github.com/mattermost/mattermost-server | 10.11.0 | 10.11.4 |
| go | github.com/mattermost/mattermost-server | 10.5.0 | 10.5.12 |
| openSUSE:Leap 15.6 | govulncheck-vulndb | 0 | 0.0.20251209T172047-150000.1.127.1 |
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