OHIF Viewers DICOM
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Summary
Successful exploitation of this vulnerability in a custom integration version could allow an attacker to steal an authenticated clinician's token via a crafted link.
The following versions of OHIF Viewers DICOM are affected:
OHIF DICOM Web Viewer Framework <=v3.12.0
CVSS
Vendor
Equipment
Vulnerabilities
v3 8.2
Open Health Imaging Foundation (OHIF)
OHIF Viewers DICOM
Server-Side Request Forgery (SSRF)
Background
Critical Infrastructure Sectors: Healthcare and Public Health
Countries/Areas Deployed: Worldwide
Company Headquarters Location: United States
Vulnerabilities
Expand All +
CVE-2026-12473
Two data sources (DICOMWebProxy and DICOMJSON) shipped in the default configuration fetch an arbitrary URL parameter without validation. A global authentication service in OHIF automatically injects the authenticated user's OIDC Bearer token into the resulting requests, sending it to the attacker-controlled server. DICOMweb data sources are not impacted.
View CVE Details
Affected Products
OHIF Viewers DICOM
Vendor:Open Health Imaging Foundation (OHIF)
Product Version:Open Health Imaging Foundation (OHIF) OHIF DICOM Web Viewer Framework: <=v3.12.0
Product Status:known_affected
Remediations
MitigationThe maintainer has fixed the reported vulnerability and released version 3.12.2 (2026-05-18). The fix is located at OHIF/Viewers#5985 (master), OHIF/Viewers#5978 (release/3.12).
MitigationUsers are recommended to upgrade to v3.12.2 or later. Operators who need dicomwebproxy or dicomjson in authenticated deployments must additionally configure the new dangerouslyAllowedOriginsForAuthenticatedEnvironments allowlist in app-config.js.
MitigationUsers running OHIF with authentication should remove ALL unused DicomWebProxyDataSource and DicomJSONDataSource configurations from the configuration file they are deploying with.
Relevant CWE: CWE-918 Server-Side Request Forgery (SSRF)
Metrics
CVSS Version
Base Score
Base Severity
Vector String
3.1
8.2
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
4.0
8.3
HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N
Acknowledgments
Simon Weber and Volker Sch”nefeld of Machine Spirits UG reported this vulnerability to CISA
Legal Notice and Terms of Use
This product is provided subject to this Notification (
https://www.cisa.gov/notification) and this Privacy & Use policy (
https://www.cisa.gov/privacy-policy).
Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability.
Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
CISA also recommends users take the following measures to protect themselves from social engineering attacks:
Do not click web links or open attachments in unsolicited email messages.
Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.
No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time.
Revision History
Initial Release Date: 2026-06-25
Date
Revision
Summary
2026-06-25
1
Initial Publication
Legal Notice and Terms of Use
https://www.cisa.gov/news-events/ics-advisories/icsma-26-176-02
2026-06-25 12:00 UTC
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