Cross-site scripting in OpenEMR - CVE-2026-33299
Published: April 23, 2026
Vulnerability identifier: #VU127323
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-33299
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: OpenEMR
Affected software:
OpenEMR
OpenEMR
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary JavaScript in another user's browser.
The vulnerability exists due to cross-site scripting in the Eye Exam form answer display function when rendering stored form answers on patient encounter pages or visit history. A remote user can submit a malicious form answer to execute arbitrary JavaScript in another user's browser.
User interaction is required, and the injected script executes when a user with the relevant form role views the affected encounter content or visit history.
How to mitigate CVE-2026-33299
Install security update from vendor's website.