CVE-2026-118670

{
  "id": "CVE-2026-118670",
  "sourceIdentifier": "[email protected]",
  "published": "2026-11-06T18:17:57.340",
  "lastModified": "2026-11-06T18:17:57.340",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "OHIF Viewers is a zero-footprint DICOM viewer with shared extension packages. From 3.5.0-beta.0 until 3.12.15, 3.13.7, and 3.14.0-beta.19, the dicom-pdf extension reads the attacker-controlled MIMETypeOfEncapsulatedDocument value in extensions/dicom-pdf/src/getSopClassHandlerModule.js and uses it as the Blob media type for the attacker-controlled EncapsulatedDocument bytes. When a victim opens Encapsulated PDF SOP Class 1.2.840.10008.5.1.4.1.1.104.1, extensions/dicom-pdf/src/viewports/OHIFCornerstonePdfViewport.tsx embeds the Blob URL in an object element. A Blob labeled as HTML is handled as HTML despite the application/pdf object hint, and the Blob inherits the OHIF origin, allowing embedded script to access session storage, authentication tokens, and same-origin PACS requests. The malicious DICOM object may be opened locally, uploaded to a shared PACS, or supplied by a DICOMweb source. This issue is fixed in source versions 3.12.15, 3.13.7, and 3.14.0-beta.19."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "OHIF",
          "product": "Viewers",
          "versions": [
            {
              "version": ">= 3.5.0-beta.0, < 3.12.15",
              "status": "affected"
            },
            {
              "version": ">= 3.13.0-beta.0, < 3.13.7",
              "status": "affected"
            },
            {
              "version": ">= 3.14.0-beta.0, < 3.14.0-beta.19",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:L",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.3
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-11-06T17:47:36.194512Z",
          "id": "CVE-2026-118670",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/OHIF/Viewers/commit/db546701bd5f2be9031c835f1de5c40aacd3dc62",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/OHIF/Viewers/commit/ef0811c66cdb04ba07ffaba145cf66ce01486899",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/OHIF/Viewers/commit/f0dba789a313f40fe7e8a8cbec322a8d8a491d76",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/OHIF/Viewers/pull/6228",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/OHIF/Viewers/releases/tag/v3.12.15",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/OHIF/Viewers/releases/tag/v3.13.7",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/OHIF/Viewers/releases/tag/v3.14.0-beta.19",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/OHIF/Viewers/security/advisories/GHSA-xwgp-w3pj-q5h3",
      "source": "[email protected]"
    }
  ]
}