Stored Cross-Site Scripting Vulnerability in OpenEMR Patient Portal by OpenEMR
CVE-2026-33346

8.7HIGH

Key Information:

Vendor

Openemr

Status
Openemr
Vendor
CVE Published:
19 March 2026

What is CVE-2026-33346?

OpenEMR, a free and open-source electronic health records and medical practice management application, contains a stored cross-site scripting vulnerability in its patient portal payment flow. This flaw allows a malicious user to embed arbitrary JavaScript code within the payment submissions. When a staff member reviews these submissions, the stored script is executed in their browser, potentially leading to unauthorized actions or data exposure. The vulnerability existed in versions before 8.0.0.2 and was addressed in this release, which ensures that submitted data is properly sanitized and escapes any harmful code.

Affected Version(s)

openemr < 8.0.0.2

References

https://github.com/openemr/openemr/security/advisories/GH...
x_refsource_CONFIRM
https://github.com/openemr/openemr/commit/6e9e1566d6e271a...
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CVSS V3.1

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.