CVE-2026-33932 HIGH

CVE-2026-33932: OpenEMR has Stored XSS in CCDA Preview via Unsanitized linkHtml Attributes

Vendor Openemr
Product openemr
Weakness CWE-79 · XSS
Published March 25, 2026
Last update March 30, 2026

CVSS base score

7.6/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality High
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to version 8.0.0.3, a stored cross-site scripting vulnerability in the CCDA document preview allows an attacker who can upload or send a CCDA document to execute arbitrary JavaScript in a clinician's browser session when the document is previewed. The XSL stylesheet sanitizes attributes for all other narrative elements but not for `linkHtml`, allowing `href="javascript:..."` and event handler attributes to pass through unchanged. Version 8.0.0.3 patches the issue.

Key dates

02Disclosure timeline

March 25, 2026 CVE published
March 30, 2026 Record updated