CVE-2026-0997 PUBLISHED

Mattermost Zoom Plugin channel preference API lacks authorization checks

Assigner: Mattermost
Reserved: 15.01.2026 Published: 16.02.2026 Updated: 16.02.2026

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 the authenticated user when processing {{/plugins/zoom/api/v1/channel-preference}}, which allows any logged-in user to change Zoom meeting restrictions for arbitrary channels via crafted API requests.. Mattermost Advisory ID: MMSA-2025-00558

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CVSS Score: 4.3

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	Low	Integrity Impact	Low
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	Mattermost
Product	Mattermost
Versions	Default: unaffected affected from 11.1.0 to 11.1.2 (incl.) affected from 10.11.0 to 10.11.9 (incl.) affected from 11.2.0 to 11.2.1 (incl.) Version 11.3.0 is unaffected Version 11.1.3 is unaffected Version 10.11.10 is unaffected Version 11.2.2 is unaffected

Solutions

Update Mattermost to versions 11.3.0, 11.1.3, 10.11.10, 11.2.2 or higher. Alternatively, update Mattermost Plugin Zoom to version 1.12.0 or higher

Credits

daw10 finder

References

MMSA-2025-00558

Problem Types

CWE-863: Incorrect Authorization CWE