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CVE-2026-6739

🗓️ 12 Jun 2026 15:49:14Reported by MattermostType 
cve
 cve
🔗 web.nvd.nist.gov👁 3 Views

Mattermost lets delegated admins patch default system roles without permission, enabling privilege escalation.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
Cvelist
CVE-2026-6739 Mattermost: Delegated admins could patch protected default system roles
12 Jun 202615:49
cvelist
EUVD
EUVD-2026-36499
12 Jun 202615:49
euvd
NVD
CVE-2026-6739
12 Jun 202617:16
nvd
Positive Technologies
PT-2026-48938
12 Jun 202600:00
ptsecurity
Vulnrichment
CVE-2026-6739 Mattermost: Delegated admins could patch protected default system roles
12 Jun 202615:49
vulnrichment
[
  {
    "defaultStatus": "unaffected",
    "product": "Mattermost",
    "vendor": "Mattermost",
    "versions": [
      {
        "lessThanOrEqual": "11.6.1",
        "status": "affected",
        "version": "11.6.0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "11.5.4",
        "status": "affected",
        "version": "11.5.0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "10.11.15",
        "status": "affected",
        "version": "10.11.0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "10.11.16",
        "status": "affected",
        "version": "10.11.0",
        "versionType": "semver"
      },
      {
        "version": "11.7.0",
        "status": "unaffected"
      },
      {
        "version": "11.6.2",
        "status": "unaffected"
      },
      {
        "version": "11.5.5",
        "status": "unaffected"
      },
      {
        "version": "10.11.16",
        "status": "unaffected"
      },
      {
        "version": "10.11.17",
        "status": "unaffected"
      }
    ]
  }
]

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12 Jun 2026 17:16Current
5.3Medium risk
Vulners AI Score5.3
CVSS 3.16.7
SSVC
3