CVE-2025-14573
Permission Bypass in Mattermost 10.11.x Allows Unauthorized User Addition
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) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-862 | The product does not perform an authorization check when an actor attempts to access a resource or perform an action. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in Mattermost versions 10.11.x up to and including 10.11.9. It occurs because the software fails to enforce invite permissions properly when updating team settings. As a result, team administrators who do not have the correct permissions can bypass restrictions and add users to their team through API requests.
How can this vulnerability impact me? :
The impact of this vulnerability is that unauthorized team administrators can add users to teams without proper permission. This could lead to unauthorized access to team resources and information, potentially compromising the confidentiality and integrity of data within the affected Mattermost teams.
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