Vulnerability · Published Jun 30, 2025 · Assigned by Mattermost
CVE-2025-46702Mattermost Playbooks allows privilege escalation through improper access control in playbook run participant management
Medium 5.4
In plain English
A medium-severity incorrect authorization in Mattermost from Mattermost. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Mattermost versions 10.5.x <= 10.5.5, 9.11.x <= 9.11.15, 10.8.x <= 10.8.0, 10.7.x <= 10.7.2, 10.6.x <= 10.6.5 fail to properly enforce channel member management permissions when adding participants to playbook runs. This allows authenticated users with member-level permissions to bypass system admin restrictions and add or remove users to/from private channels via the playbook run participants feature, even when the 'Manage Members' permission has been explicitly removed. This can lead to unauthorized access to sensitive channel content and allow guest users to gain channel management privileges.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/mattermost/mattermost-server | 0.0.0-20250513065225-4ae5d647fb88, 10.5.6+incompatible, 10.6.6+incompatible, 10.7.3+incompatible, 10.8.1+incompatible, 9.11.16+incompatible | GO-2025-3796 |
| Go | github.com/mattermost/mattermost-server | 0.0.0-20250513065225-4ae5d647fb88 | GHSA-v8fr-vxmw-6mf6 |
| Go | github.com/mattermost/mattermost-server/v5 | no fix listed | GO-2025-3796 |
| Go | github.com/mattermost/mattermost-server/v6 | no fix listed | GO-2025-3796 |
| Go | github.com/mattermost/mattermost/server/v8 | 10.6.6 | GHSA-v8fr-vxmw-6mf6 |
| Go | github.com/mattermost/mattermost/server/v8 | 10.7.3 | GHSA-v8fr-vxmw-6mf6 |
| Go | github.com/mattermost/mattermost/server/v8 | 10.8.1 | GHSA-v8fr-vxmw-6mf6 |
| Go | github.com/mattermost/mattermost/server/v8 | 8.0.0-20250513065225-4ae5d647fb88 | GO-2025-3796 |
| Go | github.com/mattermost/mattermost/server/v8 | 8.0.0-20250513065225-4ae5d647fb88 | GHSA-v8fr-vxmw-6mf6 |
| Go | github.com/mattermost/mattermost/server/v8 | 9.11.16 | GHSA-v8fr-vxmw-6mf6 |
| Go | github.com/mattermost/mattermost/server/v8 | 10.5.6 | GHSA-v8fr-vxmw-6mf6 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mattermost | Mattermost | 10.5.0 – through 10.5.59.11.0 – through 9.11.1510.8.010.7.0 – through 10.7.210.6.0 – through 10.6.5 |
Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N