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CVE-2026-8239 Concrete CMS 9.5.0 and below is vulnerable to IDOR in '/ccm/frontend/conversations/get_rating'

🗓️ 21 May 2026 21:00:52Reported by ConcreteCMSType 
cvelist
 cvelist
🔗 www.cve.org👁 23 Views

Concrete CMS versions 9.5.0 and below are vulnerable to IDOR via get_rating, exposing message rating scores.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-8239
21 May 202621:00
attackerkb
CNNVD
Concrete CMS 安全漏洞
21 May 202600:00
cnnvd
CVE
CVE-2026-8239
21 May 202621:00
cve
EUVD
EUVD-2026-31349
22 May 202600:31
euvd
NVD
CVE-2026-8239
21 May 202622:16
nvd
Positive Technologies
PT-2026-42561
21 May 202600:00
ptsecurity
RedhatCVE
CVE-2026-8239
5 Jun 202619:24
redhatcve
Vulnrichment
CVE-2026-8239 Concrete CMS 9.5.0 and below is vulnerable to IDOR in '/ccm/frontend/conversations/get_rating'
21 May 202621:00
vulnrichment
[
  {
    "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"
  }
]

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21 May 2026 21:00Current
CVSS 46.3
EPSS0.00031
23