What is CVE-2025-41410?

CVE-2025-41410 is a medium-severity vulnerability in Mattermost, classified under Missing Authorization. CVSS score: 5.4/10. Published 2025-10-16.

How severe is CVE-2025-41410?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Auth bypass in Mattermost

CVE-2025-41410

Mattermost versions 10.10.x <= 10.10.2, 10.5.x <= 10.5.10, 10.11.x <= 10.11.2 fail to validate email ownership during Slack import process which allows attackers to create verified user accounts with arbitrary email domains via malicious S…

Vulnerability class: Broken Access Control

EPSS: 0.003 (20.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

Affected products

Mattermost — versions 10.10.0, 10.5.0, 10.11.0
Mattermost Mattermost_server

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

responsibledisclosure@mattermost.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-41410?: CVE-2025-41410 is a medium-severity vulnerability in Mattermost, classified under Missing Authorization. CVSS score: 5.4/10. Published 2025-10-16.
How severe is CVE-2025-41410?: Medium severity. CVSS v3 base score is 5.4 out of 10.