What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 6.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-26 · updated 2026-06-17
• Weakness: CWE-639

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.

Affected products

• openemr: before 8.0.0.3 — fixed in 8.0.0.3

How to fix

Upgrade to a fixed version: openemr 8.0.0.3. Check the vendor advisory for mitigations.

References

• https://github.com/openemr/openemr/commit/214c9b4585a6f1c8c22750172d47f0e258fec0bf
• https://github.com/openemr/openemr/releases/tag/v8_0_0_3
• https://github.com/openemr/openemr/security/advisories/GHSA-8gj5-r8vm-mghq

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