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CVE-2026-8426

🗓️ 21 May 2026 20:22:09Reported by ConcreteCMSType 
cve
 cve
🔗 web.nvd.nist.gov👁 17 Views🌐 WEB

Concrete content management CSRF allows remote code execution via package overwrite during prepare_remote_upgrade.

Related
Detection
Affected
Refs
Paths
NVD
[
  {
    "vendor": "Concrete CMS",
    "product": "Concrete CMS",
    "collectionURL": "https://github.com/concretecms/concretecms",
    "repo": "https://github.com/concretecms/concretecms",
    "versions": [
      {
        "status": "affected",
        "version": "5.0",
        "lessThanOrEqual": "9.5.0",
        "versionType": "git"
      }
    ],
    "defaultStatus": "unaffected"
  }
]
ParameterPositionPathDescriptionCWE
remoteMPIDpath/dashboard/extend/update/prepare_remote_upgrade/<remoteMPID>CSRF vulnerability enabling remote code execution via prepare_remote_upgrade when canInstallPackages is used and attacker-controlled marketplace package is returned.CWE-352CWE-829
canInstallPackagespath/dashboard/extend/update/prepare_remote_upgrade/<remoteMPID>CSRF vulnerability enabling remote code execution via prepare_remote_upgrade when canInstallPackages is used and attacker-controlled marketplace package is returned.CWE-352CWE-829

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