What is the severity of CVE-2025-27538?

CVE-2025-27538 is considered a high severity vulnerability due to its potential impact on user data security.

How do I fix CVE-2025-27538?

To remediate CVE-2025-27538, you should upgrade Mattermost to version 10.5.2 or 9.11.10 or later.

What are the risks associated with CVE-2025-27538?

CVE-2025-27538 allows users with edit_other_users permissions to change multi-factor authentication settings for other users, leading to potential unauthorized access.

Which Mattermost versions are impacted by CVE-2025-27538?

CVE-2025-27538 affects Mattermost versions 10.5.0 to 10.5.1 and 9.11.0 to 9.11.9.

Who is affected by CVE-2025-27538?

Any user with edit_other_users permissions in the affected versions of Mattermost is at risk due to CVE-2025-27538.

Vulnerability/
CVE-2025-27538

low

2.2

CWE

306

16/4/2025

CVE-2025-27538: MFA Enforcement Bypass Allows Unauthorized Removal of MFA for Other Users

First published: Wed Apr 16 2025(Updated: )

Mattermost versions 10.5.x <= 10.5.1, 9.11.x <= 9.11.9 fail to enforce MFA checks in PUT /api/v4/users/user-id/mfa when the requesting user differs from the target user ID, which allows users with edit_other_users permission to activate or deactivate MFA for other users, even if those users have not set up MFA.

Credit: responsibledisclosure@mattermost.com

Affected Software	Affected Version	How to fix
Mattermost	<=10.5.1<=9.11.9

Remedy

Update Mattermost to versions 10.6.0, 10.5.2, 9.11.10 or higher.

Never miss a vulnerability like this again

Reference Links

https://mattermost.com/security-updates

Frequently Asked Questions

What is the severity of CVE-2025-27538?
CVE-2025-27538 is considered a high severity vulnerability due to its potential impact on user data security.
How do I fix CVE-2025-27538?
To remediate CVE-2025-27538, you should upgrade Mattermost to version 10.5.2 or 9.11.10 or later.
What are the risks associated with CVE-2025-27538?
CVE-2025-27538 allows users with edit_other_users permissions to change multi-factor authentication settings for other users, leading to potential unauthorized access.
Which Mattermost versions are impacted by CVE-2025-27538?
CVE-2025-27538 affects Mattermost versions 10.5.0 to 10.5.1 and 9.11.0 to 9.11.9.
Who is affected by CVE-2025-27538?
Any user with edit_other_users permissions in the affected versions of Mattermost is at risk due to CVE-2025-27538.

collector/mitre-cve
source/MITRE
agent/remedy
agent/references
agent/title
agent/description
agent/type
agent/weakness
agent/first-publish-date
agent/guess-ai
agent/software-canonical-lookup
agent/softwarecombine
collector/nvd-api
source/NVD
agent/last-modified-date
agent/source
agent/author
agent/tags
agent/severity
agent/event
vendor/mattermost
canonical/mattermost

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.