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CVE-2025-41410
Good to know:
Date: October 16, 2025
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 Slack import data to bypass email-based team access restrictions
Severity Score
Related Resources (7)
Severity Score
Weakness Type (CWE)
Missing Authorization
CWE-862Top Fix
Upgrade Version
Upgrade to version github.com/mattermost/mattermost - v10.5.11;github.com/mattermost/mattermost - v10.10.3;github.com/mattermost/mattermost - v10.11.3;github.com/mattermost/mattermost-server - v10.10.3;github.com/mattermost/mattermost-server - v10.5.11;github.com/mattermost/mattermost-server - v10.11.3
CVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | NETWORK |
| Attack Complexity (AC): | LOW |
| Privileges Required (PR): | LOW |
| User Interaction (UI): | NONE |
| Scope (S): | UNCHANGED |
| Confidentiality (C): | LOW |
| Integrity (I): | LOW |
| Availability (A): | NONE |