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

Quick assessment

Affected
openemr openemr
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenEMR是OpenEMR社区的一套开源的医疗管理系统。该系统可用于医疗实践管理、电子医疗记录、处方书写和医疗帐单申请。 OpenEMR 8.0.0.3之前版本存在安全漏洞，该漏洞源于library/pnotes.inc.php中的传统患者笔记功能执行更新和删除时未验证笔记是否属于用户有权访问的患者，可能导致不安全的直接对象引用。

CVSS 8.1 · High EPSS 0.36% · P27
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I. Basic Information for CVE-2026-34055

Vulnerability Information
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Vulnerability Title
OpenEMR has IDOR in Patient Notes Web UI allows unauthorized note access/modification
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
OpenEMR 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenEMR是OpenEMR社区的一套开源的医疗管理系统。该系统可用于医疗实践管理、电子医疗记录、处方书写和医疗帐单申请。 OpenEMR 8.0.0.3之前版本存在安全漏洞，该漏洞源于library/pnotes.inc.php中的传统患者笔记功能执行更新和删除时未验证笔记是否属于用户有权访问的患者，可能导致不安全的直接对象引用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
openemr openemr < 8.0.0.3 -

II. Public POCs for CVE-2026-34055

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III. Intelligence Information for CVE-2026-34055

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Patches & Fixes for CVE-2026-34055 (1)

Vendor Pages for CVE-2026-34055 (1)

Same Patch Batch · openemr · 2026-03-25 · 20 CVEs total

CVE-2026-33917 8.8 HIGH OpenEMR has SQL Injection in CAMOS Form
CVE-2026-33348 8.7 HIGH OpenEMR has Stored XSS in patient encounter Eye Exam form $CHRONIC2 and $CHRONIC3
CVE-2026-29187 8.1 HIGH OpenEMR Vulnerable to Authenticated Blind Boolean-Based SQL Injection in new_search_popup.
CVE-2026-33913 7.7 HIGH OpenEMR: XInclude Injection in CCDA Import Allows Reading Arbitrary Server Files
CVE-2026-34056 7.7 HIGH OpenEMR has a Privilege Escalation that Allows a Low-Level User to View Admin-Only Data
CVE-2026-33918 7.6 HIGH OpenEMR Missing Authorization on Claim File Download Endpoint
CVE-2026-33932 7.6 HIGH OpenEMR has Stored XSS in CCDA Preview via Unsanitized linkHtml Attributes
CVE-2026-33910 7.2 HIGH OpenEMR has a SQL Injection Vulnerability in patient selection
CVE-2026-33914 7.2 HIGH OpenEMR has SQL Injection in PostCalendar Category Delete
CVE-2026-34053 7.1 HIGH OpenEMR Missing Authorization in Procedure Order AJAX Deletion Handler
CVE-2026-32120 6.5 MEDIUM OpenEMR has IDOR in Fee Sheet Product Save
CVE-2026-33931 6.5 MEDIUM OpenEMR has IDOR in Portal Payment Page that Allows Cross-Patient Record Access
CVE-2026-33933 6.1 MEDIUM Reflected XSS via Unescaped contextName Parameter in Custom Template Editor
CVE-2026-33909 5.9 MEDIUM OpenEMR Vulnerable to SQL Injection via Unsanitized Variables in MedEx Recall/Reminder Pro
CVE-2026-33911 5.4 MEDIUM OpenEMR vulnerable to reflected XSS in graphs.php via title parameter
CVE-2026-33912 5.4 MEDIUM OpenEMR has reflected XSS in ajax_download.php via reportID parameter
CVE-2026-33915 5.4 MEDIUM OpenEMR Missing ACL Checks on Insurance Company API Routes
CVE-2026-34051 5.4 MEDIUM OpenEMR has Improper ACL On Import/Export Popup
CVE-2026-33934 4.3 MEDIUM OpenEMR's Missing Authorization in show-signature.php Allows Portal Patients to Read Staff

IV. Related Vulnerabilities

Same product: openemr
Same vendor: openemr
Same weakness: CWE-639

V. Comments for CVE-2026-34055

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