CVE-2026-40509

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.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/openemr/openemr/commit/f760adc7bddaf9d118e1a0d40590e686783ed21b
https://github.com/openemr/openemr/releases/tag/v8_3_0
https://github.com/openemr/openemr/security/advisories/GHSA-wffp-pj5h-xqwp
https://www.vulncheck.com/advisories/openemr-csrf-via-dicom-viewer-web-path-parameter

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-19 15:17

Updated : 2026-09-09 20:40

NVD link : CVE-2026-40509

Mitre link : CVE-2026-40509

CVE.ORG link : CVE-2026-40509

JSON object : View

Products Affected

No product.

CWE

CWE-352

Cross-Site Request Forgery (CSRF)

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