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CVE-2026-7886

🗓️ 21 May 2026 21:18:39Reported by ConcreteCMSType 
cve
 cve
🔗 web.nvd.nist.gov👁 116 Views🌐 WEB

Concrete CMS 9.5.0 and earlier allows IDOR in messages via attachments, bypassing file permissions.

Related
Detection
Affected
Refs
Paths
NVD
Vulners
[
  {
    "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
attachments[]request body/AddMessageIDOR in AddMessage via attachments[] parameter allows a user to reference any file in the CMS file manager by its sequential ID, bypassing file permission checks.CWE-639
attachments[]request body/UpdateMessageIDOR in UpdateMessage via attachments[] parameter allows a user to reference any file in the CMS file manager by its sequential ID, bypassing file permission checks.CWE-639

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23 Jul 2026 11:10Current
5.5Medium risk
Vulners AI Score5.5
CVSS 3.14.3
CVSS 42.3
EPSS0.00288
SSVC
116