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CVE-2026-18113 Concrete CMS 9.0 to 9.5.2 is vulnerable to Stored XSS in the Top Navigation Bar Block via Dropdown Child Page Names

🗓️ 15 Sep 2026 17:32:16Reported by ConcreteCMSType 
cvelist
 cvelist
🔗 www.cve.org👁 5 Views

In Concrete CMS 9.0 to 9.5.2, the Top Navigation Bar block did not HTML-escape dropdown child page names before writing them into the page, so a user who could create or rename pages could store a script through a child page name and have it run i...

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Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-18113
15 Sep 202617:32
cve
euvd
EUVD
EUVD-2026-78904
15 Sep 202617:32
euvd
nvd
NVD
CVE-2026-18113
15 Sep 202618:17
nvd
[
  {
    "vendor": "Concrete CMS",
    "product": "Concrete CMS",
    "collectionURL": "https://github.com/concretecms/concretecms",
    "repo": "https://github.com/concretecms/concretecms",
    "versions": [
      {
        "status": "affected",
        "version": "9.0.0",
        "lessThanOrEqual": "9.5.2",
        "versionType": "git"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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15 Sep 2026 17:32Current
CVSS 47.5
5