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CVE-2026-81910 Concrete CMS 9 through 9.5.2 is vulnerable to Server-Side Template Injection (SSTI) in Theme Customizer via Unvalidated Style Values

🗓️ 11 Sep 2026 18:20:25Reported by ConcreteCMSType 
cvelist
 cvelist
🔗 www.cve.org👁 5 Views

SSTI in Concrete CMS 9 through 9.5.2 Theme Customizer enables arbitrary file read and SSRF.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-81910
11 Sep 202618:20
cve
euvd
EUVD
EUVD-2026-76193
11 Sep 202618:20
euvd
nvd
NVD
CVE-2026-81910
11 Sep 202619:17
nvd
ptsecurity
Positive Technologies
PT-2026-90048
11 Sep 202600:00
ptsecurity
vulnrichment
Vulnrichment
CVE-2026-81910 Concrete CMS 9 through 9.5.2 is vulnerable to Server-Side Template Injection (SSTI) in Theme Customizer via Unvalidated Style Values
11 Sep 202618:20
vulnrichment
[
  {
    "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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