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
References (1)
Core 1
Core References
Various Sources vendor-advisory
https://mattermost.com/security-updates
Scores
CVSS v3
4.3
EPSS
0.0004
EPSS Percentile
12.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-862
Status
published
Products (3)
mattermost/mattermost-plugin-zoom
0 - 1.12.0Go
mattermost/mattermost_server
10.11.0 - 10.11.10
mattermost/zoom
< 1.11.0
Published
Feb 16, 2026
Tracked Since
Feb 18, 2026