Vulnerability Report

CVE-2026-33931

Title: Insecure Direct Object Reference (IDOR) in Patient Portal Payment Page

Auth Bypass

Proof Of Concept

No public PoC currently indexed for CVE-2026-33931.

CWE Category CWE-639
Published Date Mar 26, 2026
Modified Date Mar 26, 2026
Exploit Status Not Found
Score 6.5 CVSS v3.1
Exploit Probability (EPSS)
0.35%

Vulnerability Summary

CVE-2026-33931: 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.

Impacted Vendors

O
open-emr 1
O
openemr 1

Reference Links

https://github.com/openemr/openemr/commit/7bf30e0ec5587f80c19094d58df09d46ac328806 https://github.com/openemr/openemr/releases/tag/v8_0_0_3 https://github.com/openemr/openemr/security/advisories/GHSA-hf37-5rp9-j27j
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
6.5
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-33931 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected Stack

No specific products linked.