Information Disclosure in Common Teams API_CVE-2025-12559

4.3 / 10

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Description

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

Basic Information

ID CVE-2025-12559

Source Mattermost

Published Nov 27, 2025 at 16:36

Affected Product

Vendor Mattermost

Product Mattermost

Version 11.0.0

Affected Versions Mattermost Mattermost 11.0.0
Mattermost Mattermost 10.12.0
Mattermost Mattermost 10.11.0
Mattermost Mattermost 10.5.0

CWE Classification

CWE-200

References

mattermost.com /security-updates

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    "published": "2025-11-27T16:36:30.545Z",
    "modified": "2025-11-27T16:36:30.545Z",
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