OHIF Viewers: DOM-Based Cross Site Scripting (XSS) through MIME type of document

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-118670
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-06 18:17:57 UTC
Updated2026-11-06 18:17:57 UTC
DescriptionOHIF 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.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:L

Problem Types: CWE-79 | CWE-79 CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:L
3.1CNADECLARED8.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:L

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA OHIF Viewers affected >= 3.5.0-beta.0, < 3.12.15 Not specified
CNA OHIF Viewers affected >= 3.13.0-beta.0, < 3.13.7 Not specified
CNA OHIF Viewers affected >= 3.14.0-beta.0, < 3.14.0-beta.19 Not specified

References

ReferenceSourceLinkTags
github.com/OHIF/Viewers/security/advisories/GHSA-xwgp-w3pj-q5h3 [email protected] github.com
github.com/OHIF/Viewers/commit/db546701bd5f2be9031c835f1de5c40aacd3dc62 [email protected] github.com
github.com/OHIF/Viewers/releases/tag/v3.14.0-beta.19 [email protected] github.com
github.com/OHIF/Viewers/releases/tag/v3.13.7 [email protected] github.com
github.com/OHIF/Viewers/releases/tag/v3.12.15 [email protected] github.com
github.com/OHIF/Viewers/commit/ef0811c66cdb04ba07ffaba145cf66ce01486899 [email protected] github.com
github.com/OHIF/Viewers/pull/6228 [email protected] github.com
github.com/OHIF/Viewers/commit/f0dba789a313f40fe7e8a8cbec322a8d8a491d76 [email protected] github.com
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