# CVE-2026-12473: OHIF Viewers DICOM Server-Side request forgery

> Attackers can exploit SSRF in default DICOM data sources to steal authenticated users' OIDC Bearer tokens from the OHIF Viewer.

- **Severity:** High 8.3 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 25 Jun 2026
- **Updated:** 26 Jun 2026
- **Also known as:** GHSA-jfr3-mc8c-wqgx

## What is CVE-2026-12473?

CVE-2026-12473 is a high-severity server-side request forgery vulnerability in Open Health Imaging Foundation (OHIF) DICOM Web Viewer Framework, published on 25 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

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.

Weakness: CWE-918 (Server-Side Request Forgery)

## Which versions are affected by CVE-2026-12473?


## How do I fix CVE-2026-12473?

No fix has been published for CVE-2026-12473 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-12473 being exploited?

There is no known exploitation of CVE-2026-12473 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-12473 and fix it if it is affected.

What it is: CVE-2026-12473 is a high-severity server-side request forgery vulnerability in Open Health Imaging Foundation (OHIF) DICOM Web Viewer Framework, published on 25 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-12473 in the wild and no public exploit code.

Affected product: Open Health Imaging Foundation (OHIF) DICOM Web Viewer Framework. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-12473/ (Markdown: https://insights.sbomify.com/CVE-2026-12473/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-12473
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-12473
- OSV: https://osv.dev/vulnerability/CVE-2026-12473

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-12473/
Summaries are generated and may contain mistakes; the official description above is the record.