CVE-2025-12559 - Information Disclosure in Common Teams API

CVE ID : CVE-2025-12559
Published : Nov. 27, 2025, 5:15 p.m. | 1 hour, 3 minutes ago
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
Severity: 4.3 | MEDIUM
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