What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 6.5 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: yes
• Published: 2026-03-19 · 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 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.

Affected products

• openemr: before 8.0.0.2 — fixed in 8.0.0.2

How to fix

Upgrade to a fixed version: openemr 8.0.0.2. Check the vendor advisory for mitigations.

References

• https://github.com/openemr/openemr/commit/21dee7658a5f3b18c5750e3fae7324e875c1703a
• https://github.com/openemr/openemr/security/advisories/GHSA-66j9-ffq4-h222

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