OpenEMR up to 8.2.x Billing Interface sl_eob_invoice.php id improper authorization

Summaryinfo

A vulnerability has been found in OpenEMR up to 8.2.x and classified as critical. Affected is an unknown function of the file interface/billing/sl_eob_invoice.php of the component Billing Interface. The manipulation of the argument ID leads to improper authorization. This vulnerability is uniquely identified as CVE-2026-124471. The attack is possible to be carried out remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in OpenEMR up to 8.2.x. It has been rated as critical. This issue affects an unknown part of the file interface/billing/sl_eob_invoice.php of the component Billing Interface. The manipulation of the argument id with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

OpenEMR before 8.3.0 contains a missing authorization vulnerability in interface/billing/sl_eob_invoice.php that allows any authenticated user to read and modify billing data for any encounter. Attackers can iterate the id parameter to read patient names and billing notes, and post payments, adjustments, deletions, or billing notes against any patient's account.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-124471 since 11/08/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1548.002 according to MITRE ATT&CK.

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

Upgrading to version 8.3.0 eliminates this vulnerability.

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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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