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Mend.io Vulnerability Database
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CVE-2025-12559
Good to know:
Date: November 27, 2025
Mattermost versions 11.0.x <= 11.0.2, 10.12.x <= 10.12.1, 10.11.x <= 10.11.4, 10.5.x <= 10.5.12 fail to sanitize team email addresses to be visible only to Team Admins, which allows any authenticated user to view team email addresses via the GET /api/v4/channels/{channel_id}/common_teams endpoint
Severity Score
Related Resources (10)
Severity Score
Weakness Type (CWE)
Exposure of Sensitive Information to an Unauthorized Actor
CWE-200Top Fix
Upgrade Version
Upgrade to version github.com/mattermost/mattermost - v10.5.13;github.com/mattermost/mattermost - v10.11.5;github.com/mattermost/mattermost - v10.12.2;github.com/mattermost/mattermost - v11.0.3;github.com/mattermost/mattermost/server/v8 - v8.0.0-20251015091448-abbf01b9db45;github.com/mattermost/mattermost-server - v11.0.3;github.com/mattermost/mattermost-server - v10.12.2;github.com/mattermost/mattermost-server - v10.11.5;github.com/mattermost/mattermost-server - v10.5.13
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): | NONE |
| Availability (A): | NONE |