CVE-2026-40509
OpenEMR < 8.3.0 CSRF via DICOM Viewer web_path Parameter
- State
- Published
- Severity
- 5.3 Medium
- Published
- Aug 19, 2026
- Updated
- Oct 1, 2026
- Reserved
- Apr 13, 2026
Description
OpenEMR before 8.3.0 contains a cross-site request forgery vulnerability in the DICOM viewer. The web_path GET parameter in the DICOM viewer page is embedded unsanitized as a URL without validation against expected path formats. An attacker can craft a URL that causes an authenticated user with Patients - Documents permissions to make authenticated requests to arbitrary OpenEMR endpoints, enabling forced logout and other state-changing actions.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 4.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N | VulnCheck |
Weaknesses
- CWE-352 Cross-Site Request Forgery (CSRF)
Affected Products
| Product | Versions |
|---|---|
openemropenemr |
|
References
- GitHub Security Advisory (GHSA-wffp-pj5h-xqwp)vendor-advisory
- OpenEMR v8_3_0 Release Notesrelease-notes
- Patch Commitpatch
- https://www.vulncheck.com/advisories/openemr-csrf-via-dicom-viewer-web-path-parameterthird-party-advisory
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