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.
Metrics
Affected Vendors & Products
References
History
Thu, 26 Mar 2026 18:15:00 +0000
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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Thu, 26 Mar 2026 16:30:00 +0000
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| First Time appeared |
Open-emr
Open-emr openemr |
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| CPEs | cpe:2.3:a:open-emr:openemr:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Open-emr
Open-emr openemr |
Thu, 26 Mar 2026 12:00:00 +0000
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| First Time appeared |
Openemr
Openemr openemr |
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| Vendors & Products |
Openemr
Openemr openemr |
Thu, 26 Mar 2026 00:00:00 +0000
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| 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. | |
| Title | OpenEMR's Missing Authorization in show-signature.php Allows Portal Patients to Read Staff Signatures | |
| Weaknesses | CWE-639 CWE-862 |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-03-26T18:09:35.818Z
Reserved: 2026-03-24T19:50:52.103Z
Link: CVE-2026-33934
Updated: 2026-03-26T18:09:32.903Z
Status : Analyzed
Published: 2026-03-26T00:16:40.290
Modified: 2026-03-26T16:28:33.680
Link: CVE-2026-33934
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