CVE-2026-40509

medium

OpenEMR before 8.3.0 contains a cross-site request forgery vulnerability in the DICOM viewer.

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

4.3

4.3 (CVSS v3.1)

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

Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)

Timeline (UTC)

Published: 2026-08-19 15:17

Modified: 2026-10-27 13:10

NVD status: Deferred

Last synced 1 day ago

Verified against the source API 2026-10-28 11:30 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

Not reported by the source (unknown — not "none").

Weakness classification (CWE)

CWE-352

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

No vendor advisory or patch reference tagged by NVD. Check the references below.

References

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

Data sources

NVD CVE API 2.0 — fetched 2026-10-28 11:30 UTC · record ↗

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