CVE-2026-33934
Medium
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.
SeverityMedium
CVSS4.3
Exploit probability—
ProductOpen-emr Openemr
PublishedMar 26, 2026
First seenMar 26, 2026
How to fix
Update
- open-emr openemr8.0.0.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| open-emr openemr | v < 8.0.0.3 | 8.0.0.3 |
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