Cross-site scripting in OpenEMR - CVE-2026-33912
Published: April 23, 2026
Vulnerability identifier: #VU127351
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-2026-33912
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 the victim's browser session.
The vulnerability exists due to cross-site scripting in custom/ajax_download.php when handling the reportID POST parameter. A remote user can submit a specially crafted form to execute arbitrary JavaScript in the victim's browser session.
User interaction is required to submit the crafted form.
How to mitigate CVE-2026-33912
Install security update from vendor's website.