OIDC token theft via unchecked data-source URL
Published Jun 25, 2026 · Updated Jun 25, 2026
SSRF in OHIF Viewer 3.12.0 and earlier allows remote attackers to steal an authenticated user’s OIDC bearer token via a crafted link. DICOMWebProxy and DICOMJSON read the url query parameter without an origin check, while the global authentication service adds the live token to resulting cross-origin requests. An already-authenticated user must open the link; the captured token grants the attacker’s server access to imaging studies available to that user, while standard DICOMweb sources remain unaffected.
Summary
What happened
SSRF in OHIF Viewer 3.12.0 and earlier allows remote attackers to steal an authenticated user’s OIDC bearer token via a crafted link. DICOMWebProxy and DICOMJSON read the url query parameter without an origin check, while the global authentication service adds the live token to resulting cross-origin requests. An already-authenticated user must open the link; the captured token grants the attacker’s server access to imaging studies available to that user, while standard DICOMweb sources remain unaffected.
The record
- CVE
- CVE-2026-12473
- Published
- Jun 25, 2026
- Updated
- Jun 25, 2026
- Vendor
- Open Health Imaging Foundation
- Product
- OHIF Viewer
- Classifications
- CWE-918, T1566.002
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 25, 2026CVE publishedPublication date reported by the CVE source.
- Jun 25, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=v3.12.0
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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