CVE-2026-33931 OpenEMR has IDOR in Portal Payment Page that Allows Cross-Patient Record Access

Medium 6.5 Published 25 Mar 2026 Updated 26 Mar 2026

Authenticated patients can access other patients' payment records and PHI by manipulating a query parameter in the OpenEMR portal.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-33931?

CVE-2026-33931 is a medium-severity missing authorization vulnerability in Open-Emr Openemr, published on 25 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to version 8.0.0.3, an Insecure Direct Object Reference (IDOR) vulnerability in the patient portal payment page allows any authenticated portal patient to access other patients' payment records — including invoice/billing data (PHI) and payment card metadata — by manipulating the `recid` query parameter in `portal/portal_payment.php`. Version 8.0.0.3 patches the issue.

Weakness: CWE-639

Which versions are affected by CVE-2026-33931?

It affects 1 product.

Products include Open-Emr Openemr.

How do I fix CVE-2026-33931?

No fix has been published for CVE-2026-33931 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-33931 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33931 exists.

All Open-Emr Openemr vulnerabilities

Sources

Also known as GHSA-hf37-5rp9-j27j.