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CVE-2025-12559

🗓️ 27 Nov 2025 16:36:30Reported by MattermostType 
cve
 cve
🔗 web.nvd.nist.gov👁 54 Views🌐 WEB

CVE-2025-12559: Mattermost information disclosure via common teams API; authenticated users view team emails due to improper sanitization.

Related
Detection
Affected
Refs
Paths
NVD
Vulners
Node
OR
mattermostmattermost_serverRange10.5.0–10.5.13
mattermostmattermost_serverRange10.11.0–10.11.5
mattermostmattermost_serverRange10.12.0–10.12.2
mattermostmattermost_serverRange11.0.0–11.0.3
[
  {
    "defaultStatus": "unaffected",
    "product": "Mattermost",
    "vendor": "Mattermost",
    "versions": [
      {
        "lessThanOrEqual": "11.0.2",
        "status": "affected",
        "version": "11.0.0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "10.12.1",
        "status": "affected",
        "version": "10.12.0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "10.11.4",
        "status": "affected",
        "version": "10.11.0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "10.5.12",
        "status": "affected",
        "version": "10.5.0",
        "versionType": "semver"
      },
      {
        "version": "11.1.0",
        "status": "unaffected"
      },
      {
        "version": "11.0.3",
        "status": "unaffected"
      },
      {
        "version": "10.12.2",
        "status": "unaffected"
      },
      {
        "version": "10.11.5",
        "status": "unaffected"
      },
      {
        "version": "10.5.13",
        "status": "unaffected"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
{channel_id}path/api/v4/channels/{channel_id}/common_teamsAuthenticated users can view team email addresses via this endpoint because the application fails to sanitize team email addresses to be visible only to Team Admins.CWE-200

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19 Oct 2026 13:10Current
6.4Medium risk
Vulners AI Score6.4
CVSS 3.14.3
EPSS0.00232
SSVC
54