CVE-2026-33304 MEDIUM

CVE-2026-33304: OpenEMR has Authorization Bypass in Dated Reminders Log

Vendor Openemr

Product openemr

Weakness CWE-639 · IDOR

Published March 19, 2026

Last update March 20, 2026

View on NVD All CVEs

CVSS base score

6.5/10

Attack vector Network

Attack complexity Low

Privileges required Low

User interaction None

Confidentiality High

Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

What the vulnerability does

01Description

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.0.0.2, an authorization bypass in the dated reminders log allows any authenticated non-admin user to view reminder messages belonging to other users, including associated patient names and free-text message content, by crafting a GET request with arbitrary user IDs in the `sentTo[]` or `sentBy[]` parameters. Version 8.0.0.2 fixes the issue.

Key dates

02Disclosure timeline

March 19, 2026 CVE published

March 20, 2026 Record updated

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-33304 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/639.html

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