CVE-2026-0998
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
| Software | From | Fixed in |
|---|---|---|
| mattermost / mattermost_server | 10.11.0 | 10.11.10 |
| mattermost / mattermost_server | 11.1.0 | 11.1.3 |
| mattermost / mattermost_server | 11.2.0 | 11.2.2 |
| mattermost / zoom | - | 1.11.0.x |
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