medium4.3
CVE-2026-0998
Mattermost Plugin Zoom fail to validate user identity and post ownership in the {{/api/v1/askPMI}} endpoint
Impact
Mattermost versions 11.1.x <= 11.1.2, 10.11.x <= 10.11.9, 11.2.x <= 11.2.1 and Mattermost Plugin Zoom versions <=1.11.0 fail to validate user identity and post ownership in the {{/api/v1/askPMI}} endpoint which allows unauthorized users to start Zoom meetings as any user and overwrite arbitrary posts via direct API calls with manipulated user IDs and post data.. Mattermost Advisory ID: MMSA-2025-00534
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/mattermost/mattermost-plugin-zoom | < 1.12.0 | 1.12.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mattermost | Mattermost Server | from 10.11.0 before 10.11.10 from 11.1.0 before 11.1.3 from 11.2.0 before 11.2.2 |
| Mattermost | Zoom | through 1.11.0 |