OpenEMR up to 8.2.x Payment payment_ajax.php improper authorization

Summaryinfo

A vulnerability labeled as problematic has been found in OpenEMR up to 8.2.x. The impacted element is an unknown function of the file library/ajax/payment_ajax.php of the component Payment. The manipulation results in improper authorization. This vulnerability was named CVE-2026-104135. The attack may be performed from remote. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic has been found in OpenEMR up to 8.2.x. Affected is an unknown part of the file library/ajax/payment_ajax.php of the component Payment. The manipulation with an unknown input leads to a improper authorization vulnerability. CWE is classifying the issue as CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality. CVE summarizes:

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.3.0, library/ajax/payment_ajax.php validates a CSRF token but performs no AclMain authorization check before executing a wildcard search of patient_data. Any authenticated user, including a non-clinical role, can enumerate patient identifiers, full names, and dates of birth through the set_patient branch. This issue is fixed in version 8.3.0.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-104135 since 10/01/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1548.002 by the MITRE ATT&CK project.

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

Upgrading to version 8.3.0 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Business Process Management Software

Name

• OpenEMR

Version

• 8.0
• 8.1
• 8.2

License

• open-source

Website

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

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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