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CVE-2025-27538

2.2 · LOW

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…

Published Apr 16, 2025CWE-306EPSS 0.24%

Overview

CVE-2025-27538 is a low-severity vulnerability. It was published on April 16, 2025 and has a CVSS 3.1 base score of 2.2 (LOW).

This vulnerability has a CVSS 3.1 base score of 2.2, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refmattermost.com/security-updates

How CyberStrike helps

Frequently asked questions

What is CVE-2025-27538?

CVE-2025-27538 is a low-severity vulnerability. It was published on April 16, 2025 and has a CVSS 3.1 base score of 2.2 (LOW).

How severe is CVE-2025-27538?

This vulnerability has a CVSS 3.1 base score of 2.2, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-27538?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-27538?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-27538 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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