Description

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

INFO

Published Date :

2026-02-16T09:54:24.732Z

Last Modified :

2026-02-17T15:00:44.691Z

Source :

Mattermost
AFFECTED PRODUCTS

The following products are affected by CVE-2026-0998 vulnerability.

Vendors Products
Mattermost
  • Mattermost
  • Mattermost Server
  • Zoom
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-0998.

URL Resource
https://mattermost.com/security-updates cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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