OpenEMR up to 7.x portal_payment.php pid authorization

Summaryinfo

A vulnerability was found in OpenEMR up to 7.x. It has been classified as critical. Affected is an unknown function of the file portal/portal_payment.php. Performing a manipulation of the argument pid results in authorization. This vulnerability is identified as CVE-2026-25147. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in OpenEMR up to 7.x. It has been classified as critical. This affects an unknown code block of the file portal/portal_payment.php. The manipulation of the argument pid with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to version 8.0.0, in `portal/portal_payment.php`, the patient id used for the page is taken from the request (`$pid = $_REQUEST['pid'] ?? $pid` and `$pid = ($_REQUEST['hidden_patient_code'] ?? null) > 0 ? $_REQUEST['hidden_patient_code'] : $pid`) instead of being fixed to the authenticated portal user. The portal session already has a valid `$pid` for the logged-in patient. Overwriting it with user-supplied values and using it without authorization allows a portal user to view and interact with another patient's demographics, invoices, and payment history—horizontal privilege escalation and IDOR. Version 8.0.0 contains a fix for the issue.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-25147 since 01/29/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details of the vulnerability are known, but there is no available exploit.

By approaching the search of inurl:portal/portal_payment.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 8.0.0 eliminates this vulnerability.

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Productinfo

Type

• Business Process Management Software

Name

• OpenEMR

Version

• 7.x

License

• open-source

Website

• Product: https://github.com/openemr/openemr/

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