CVE-2026-34055: OpenEMR has IDOR in Patient Notes Web UI allows unauthorized note access/modification
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 Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2026-34055?
CVE-2026-34055 is considered a critical vulnerability due to the potential for unauthorized access and modification of patient notes.
How do I fix CVE-2026-34055?
To fix CVE-2026-34055, upgrade OpenEMR to version 8.0.0.3 or later.
What type of vulnerability is CVE-2026-34055?
CVE-2026-34055 is classified as an Insecure Direct Object Reference (IDOR) vulnerability.
What impact does CVE-2026-34055 have on patient data?
CVE-2026-34055 allows unauthorized users to access and potentially modify sensitive patient notes.
Which versions of OpenEMR are affected by CVE-2026-34055?
CVE-2026-34055 affects all versions of OpenEMR prior to version 8.0.0.3.