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CVE PROGRAM SOURCE RECORD4.3 Medium

CVE-2025-12559

Information Disclosure in Common Teams API

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

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Mattermost Mattermost

Default version status: unaffected

  • 11.0.0 to ≤ 11.0.2affected
  • 10.12.0 to ≤ 10.12.1affected
  • 10.11.0 to ≤ 10.11.4affected
  • 10.5.0 to ≤ 10.5.12affected
  • 11.1.0unaffected
  • 11.0.3unaffected
  • 10.12.2unaffected
  • 10.11.5unaffected
  • 10.5.13unaffected

References