VDB

CVE-2025-12559

CVE-2025-12559 PUBLISHED CVSS 4.300000190734863 MEDIUM

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

EPSS 0.04% · 13.1th percentile

Risk Scores

CVSS v3.1
4.300000190734863
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS Score
0.04%
13.1th percentile

Affected Products

VendorProductVersions
MattermostMattermost10.12.2, 10.5.13, 10.11.5
mattermostmattermost_server10.5.0, 10.12.0, 11.0.0
github.commattermost/mattermost/server/v80
github.commattermost/mattermost-server11.0.0, 10.12.0, 10.11.0

Timeline

  • Nov 27, 2025 CVE Published
  • Nov 27, 2025 Coalition ESS Score
  • Nov 28, 2025 EPSS Score
  • Nov 28, 2025 Coalition ESS Score
  • Dec 1, 2025 PoC Published
  • Dec 3, 2025 EPSS Score
  • Dec 3, 2025 CVE Updated
  • Dec 7, 2025 EPSS Score
  • Dec 12, 2025 EPSS Score
  • Dec 13, 2025 Coalition ESS Score
  • Dec 16, 2025 EPSS Score
  • Dec 19, 2025 Coalition ESS Score

References

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