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CVE-2025-12559

🗓️ 27 Nov 2025 16:36:30Reported by MattermostType 
cve
 cve
🔗 web.nvd.nist.gov👁 8 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
Node
mattermostmattermost_serverRange10.5.010.5.13
OR
mattermostmattermost_serverRange10.11.010.11.5
OR
mattermostmattermost_serverRange10.12.010.12.2
OR
mattermostmattermost_serverRange11.0.011.0.3
[
  {
    "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_idpath/api/v4/channels/{channel_id}/common_teamsEndpoint incorrectly exposes team email addresses to any authenticated user due to improper sanitization.CWE-200

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03 Dec 2025 15:16Current
6.3Medium risk
Vulners AI Score6.3
CVSS 3.14.3
EPSS0.00042
SSVC
8