CVE-2026-0998CWE-862

Mattermost Zoom Plugin allows unauthorized meeting creation and post modification via insufficient API access controls

Medium · published February 16, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
6.9
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00177 · 6.9th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-02-16T09:54Z
EPSS history
Timeline
  • 16 FEB 09:54Z
    Mattermost Zoom Plugin allows unauthorized meeting creation and post modification via insufficient API access controls
    cvelistv5