CVE-2026-0997
Authorization Bypass in Mattermost Zoom Plugin Allows Privilege Escalation
Publication date: 2026-02-16
Last updated on: 2026-02-18
Assigner: Mattermost, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| mattermost | mattermost_server | From 10.11.0 (inc) to 10.11.10 (exc) |
| mattermost | mattermost_server | From 11.2.0 (inc) to 11.2.2 (exc) |
| mattermost | mattermost_server | From 11.1.0 (inc) to 11.1.3 (exc) |
| mattermost | zoom | to 1.11.0 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-863 | The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in certain versions of Mattermost and the Mattermost Plugin Zoom. It occurs because the system fails to properly validate the authenticated user when processing requests to the endpoint {{/plugins/zoom/api/v1/channel-preference}}. As a result, any logged-in user can exploit this flaw by sending crafted API requests to change Zoom meeting restrictions for arbitrary channels.
How can this vulnerability impact me? :
The vulnerability allows any authenticated user to modify Zoom meeting restrictions on channels they may not have permission to control. This could lead to unauthorized changes in meeting settings, potentially disrupting meetings or exposing meetings to unintended participants.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know