CVE-2026-24890
HIGHCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Lifecycle Timeline
4Description
OpenEMR is a free and open source electronic health records and medical practice management application. Prior to version 8.0.0, an authorization bypass vulnerability in the patient portal signature endpoint allows authenticated portal users to upload and overwrite provider signatures by setting `type=admin-signature` and specifying any provider user ID. This could potentially lead to signature forgery on medical documents, legal compliance violations, and fraud. The issue occurs when portal users are allowed to modify provider signatures without proper authorization checks. Version 8.0.0 fixes the issue.
Analysis
OpenEMR versions prior to 8.0.0 contain an authorization bypass in the patient portal that allows authenticated users to forge provider signatures by uploading files with admin-signature type parameters for any provider. Public exploit code exists for this vulnerability, which could enable signature forgery on medical documents, creating legal and compliance risks. …
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Remediation
Within 24 hours: Inventory all OpenEMR instances and confirm patch availability for your deployed version; isolate or restrict network access to unpatched systems. Within 7 days: Apply vendor patch to all production and non-production OpenEMR environments and validate functionality post-patch. …
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External POC / Exploit Code
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