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CVE-2026-16044

🗓️ 17 Aug 2026 14:26:52Reported by MattermostType 
cve
 cve
🔗 web.nvd.nist.gov👁 25 Views

Mattermost 11.7.x and 10.11.x allow guest users to gain Board Admin via crafted archive import.

Related
Detection
Affected
Refs
NVD
Vulners
Node
OR
mattermostmattermost_serverRange10.11.010.11.22
mattermostmattermost_serverRange11.7.011.7.7
[
  {
    "defaultStatus": "unaffected",
    "product": "Mattermost",
    "vendor": "Mattermost",
    "versions": [
      {
        "lessThanOrEqual": "11.7.6",
        "status": "affected",
        "version": "11.7.0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "10.11.21",
        "status": "affected",
        "version": "10.11.0",
        "versionType": "semver"
      },
      {
        "version": "11.9.0",
        "status": "unaffected"
      },
      {
        "version": "11.7.7",
        "status": "unaffected"
      },
      {
        "version": "10.11.22",
        "status": "unaffected"
      }
    ]
  }
]

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18 Aug 2026 20:27Current
5.3Medium risk
Vulners AI Score5.3
CVSS 3.15.4
EPSS0.0017
SSVC
25