CVE-2026-0998 — Mattermost Zoom Plugin allows unauthorized meeting creation and post modification via insufficient API access controls
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 …
Published: 2026-02-16 · CVSS: 4.3 · CVSS 3.1
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
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7