CVE-2026-34055 HIGH

CVE-2026-34055: OpenEMR has IDOR in Patient Notes Web UI allows unauthorized note access/modification

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

8.1/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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, the legacy patient notes functions in `library/pnotes.inc.php` perform updates and deletes using `WHERE id = ?` without verifying that the note belongs to a patient the user is authorized to access. Multiple web UI callers pass user-controlled note IDs directly to these functions. This is the same class of vulnerability as CVE-2026-25745 (REST API IDOR), but affects the web UI code paths. Version 8.0.0.3 patches the issue.

Key dates

02Disclosure timeline

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