CVE-2026-33931 MEDIUM

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

Vendor Openemr
Product openemr
Weakness CWE-639 · IDOR
Published March 25, 2026
Last update March 26, 2026
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 25, 2026 CVE published
March 26, 2026 Record updated