CVE-2026-40509

MediumCVSS 4.3/10Last modified Oct 27, 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.

Metrics

CVSS 3.1 4.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Weakness enumeration

CWE-352

Affected software

Vendor	Product	Versions
openemr	openemr	< 8.3.0

References

Timeline

Published: Aug 19, 2026
Last modified: Oct 27, 2026
NVD status: Deferred

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