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CVE-2026-12473 is a high-severity server-side request forgery vulnerability in OHIF Viewers DICOM affecting the OHIF DICOM Web Viewer Framework prior to version 3.12.0. The issue is caused by two data sources shipped in the default configuration, DICOMWebProxy and DICOMJSON, which fetch an arbitrary URL parameter without validation. In authenticated deployments, OHIF’s global authentication service automatically injects the authenticated user’s OIDC Bearer token into those outbound requests. If an attacker can cause the application to request an attacker-controlled URL, the bearer token is sent to that external server, enabling token theft. The issue does not affect DICOMweb data sources.
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No public exploit code observed for this vulnerability.
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A high-severity SSRF vulnerability in OHIF DICOM Web Viewer Framework that can allow theft of an authenticated user’s OIDC bearer token via crafted requests when certain default data sources fetch arbitrary URLs without validation.
A server-side request forgery vulnerability in OHIF Viewers where default-configured DICOMWebProxy and DICOMJSON data sources can fetch arbitrary URLs without validation, causing authenticated users' OIDC bearer tokens to be sent to attacker-controlled servers.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.