CVE-2026-33303

OpenEMR is a free and open source electronic health records and medical practice management application. Versions prior to 8.0.0.2 are vulnerable to stored cross-site scripting (XSS) via unescaped `portal_login_username` in the portal credential print view. A patient portal user can set their login username to an XSS payload, which then executes in a clinic staff member's browser when they open the "Create Portal Login" page for that patient. This crosses from the patient session context into the staff/admin session context. Version 8.0.0.2 fixes the issue.

• CWE-79

• https://github.com/openemr/openemr/commit/c32139b5144b1c704015221520ad2f931e25f10dPatch
• https://github.com/openemr/openemr/security/advisories/GHSA-cp37-pmfx-5mhmExploit, Vendor Advisory

Published

Mar 19, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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