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CVE-2026-8340

🗓️ 22 May 2026 13:58:55Reported by ConcreteCMSType 
cve
 cve
🔗 web.nvd.nist.gov👁 24 Views

Concrete CMS <=9.5.0 suffers CSRF via Backend File approveVersion, allowing publish of an attacker’s older file version.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-8340
22 May 202613:58
attackerkb
CNNVD
Concrete CMS 安全漏洞
22 May 202600:00
cnnvd
Cvelist
CVE-2026-8340 Concrete CMS 9.5.0 and below is vulnerable to CSRF via Backend\File::approveVersion
22 May 202613:58
cvelist
EUVD
EUVD-2026-31441
22 May 202613:58
euvd
Github Security Blog
Concrete CMS is vulnerable to CSRF via Backend\File::approveVersion
26 May 202613:30
github
NVD
CVE-2026-8340
22 May 202615:16
nvd
OSV
GHSA-XJG6-5V39-V7FC Concrete CMS is vulnerable to CSRF via Backend\File::approveVersion
26 May 202613:30
osv
Positive Technologies
PT-2026-42772
22 May 202600:00
ptsecurity
RedhatCVE
CVE-2026-8340
5 Jun 202619:43
redhatcve
Snyk
Cross-site Request Forgery (CSRF)
26 May 202613:30
snyk
Rows per page
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"
  }
]

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17 Jun 2026 11:03Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.14.3
CVSS 42.3
EPSS0.00103
SSVC
24