CVE-2026-40509

medium

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.

References

https://www.vulncheck.com/advisories/openemr-csrf-via-dicom-viewer-web-path-parameter

https://github.com/openemr/openemr/security/advisories/GHSA-wffp-pj5h-xqwp

https://github.com/openemr/openemr/releases/tag/v8_3_0

https://github.com/openemr/openemr/commit/f760adc7bddaf9d118e1a0d40590e686783ed21b

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-62510

Details

Source: Mitre, NVD

Published: 2026-08-19

Updated: 2026-10-27

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 4.3

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

Severity: Medium

CVSS v4

Base Score: 5.3

Vector: 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

Severity: Medium

EPSS

EPSS: 0.0019