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CVE-2026-87031

🗓️ 16 Sep 2026 16:40:04Reported by ConcreteCMSType 
cve
 cve
🔗 web.nvd.nist.gov👁 38 Views🌐 WEB

Missing authorization in Concrete CMS 9.2.0-9.5.3 REST API allows arbitrary account creation.

Related
Detection
Affected
Refs
Paths
NVD
Vulners
Node
concretecmsconcrete_cmsRange9.2.0–9.5.3
[
  {
    "vendor": "Concrete CMS",
    "product": "Concrete CMS",
    "collectionURL": "https://github.com/concretecms/concretecms",
    "repo": "https://github.com/concretecms/concretecms",
    "versions": [
      {
        "status": "affected",
        "version": "9.2.0",
        "lessThanOrEqual": "9.5.3",
        "versionType": "git"
      }
    ],
    "defaultStatus": "unaffected"
  }
]
ParameterPositionPathDescriptionCWE
users:add scoperequest body/ccm/api/1.0/usersThe REST API user creation endpoint fails to perform a permission check, allowing any valid OAuth token with the users:add scope to create active, validated user accounts.CWE-862

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21 Sep 2026 17:51Current
5.6Medium risk
Vulners AI Score5.6
CVSS 3.12.7
CVSS 42.1
EPSS0.00336
SSVC
38