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CVE-2026-117553

🗓️ 27 Oct 2026 13:07:49Reported by VulnCheckType 
cve
 cve
🔗 web.nvd.nist.gov👁 2 Views

Unauthenticated account takeover in Umbraco CMS via Host header poisoning.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-117553
27 Oct 202613:35
–circl
cvelist
Cvelist
CVE-2026-117553 Umbraco CMS before 17.7.2 and 18.2.2 Account Takeover via Host Header Poisoning
27 Oct 202613:07
–cvelist
euvd
EUVD
EUVD-2026-110831
27 Oct 202613:07
–euvd
nvd
NVD
CVE-2026-117553
27 Oct 202614:16
–nvd
ptsecurity
Positive Technologies
PT-2026-126412
27 Oct 202600:00
–ptsecurity
Vulners
CNA
Node
OR
umbracoumbraco_cmsRange<17.7.2
umbracoumbraco_cmsRange18.0.0–18.2.2
[
  {
    "vendor": "umbraco",
    "product": "Umbraco-CMS",
    "defaultStatus": "unaffected",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "17.7.2",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "18.0.0",
        "lessThan": "18.2.2",
        "versionType": "semver"
      }
    ],
    "packageURL": "pkg:nuget/Umbraco.Cms"
  }
]

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27 Oct 2026 16:03Current
6.1Medium risk
Vulners AI Score6.1
CVSS 3.17.5
CVSS 47.7
2