CVE-2026-33934

MEDIUM

4.3

Description

OpenEMR is a free and open source electronic health records and medical practice management application. Versions prior to 8.0.0.3 have a missing authorization check in `portal/sign/lib/show-signature.php` that allows any authenticated patient portal user to retrieve the drawn signature image of any staff member by supplying an arbitrary `user` value in the POST body. The companion write endpoint (`save-signature.php`) was already hardened against this same issue, but the read endpoint was not updated to match. Version 8.0.0.3 patches the issue.

CVE Details

CVSS v3.1 Score4.3

SeverityMEDIUM

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published3/26/2026

Last Modified3/26/2026

Sourcenvd

Honeypot Sightings0

Affected Products

open-emr:openemr

Weaknesses (CWE)

CWE-639CWE-862

References

https://github.com/openemr/openemr/commit/ae7ee1872d2e6300b165e24687cc90cf6847a4e5(security-advisories@github.com)

https://github.com/openemr/openemr/releases/tag/v8_0_0_3(security-advisories@github.com)

https://github.com/openemr/openemr/security/advisories/GHSA-w9w5-7x6h-657q(security-advisories@github.com)

IOC Correlations

No correlations recorded

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