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CVE PROGRAM SOURCE RECORD4.3 Medium

CVE-2026-33934

OpenEMR's Missing Authorization in show-signature.php Allows Portal Patients to Read Staff Signatures

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

openemr openemr

  • < 8.0.0.3affected

References