What is CVE-2026-33304?

CVE-2026-33304 is a medium-severity vulnerability in Openemr, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 6.5/10. Published 2026-03-19.

How severe is CVE-2026-33304?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Openemr

CVE-2026-33304

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…

Vulnerability class: IDOR (Insecure Direct Object Reference)

EPSS: 0.001 (27.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Openemr — versions < 8.0.0.2

Weakness classification (CWE)

References

https://github.com/openemr/openemr/security/advisories/GHSA-66j9-ffq4-h222 (x_refsource_CONFIRM)
https://github.com/openemr/openemr/commit/21dee7658a5f3b18c5750e3fae7324e875c1703a (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-33304?: CVE-2026-33304 is a medium-severity vulnerability in Openemr, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 6.5/10. Published 2026-03-19.
How severe is CVE-2026-33304?: Medium severity. CVSS v3 base score is 6.5 out of 10.