Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in OpenEMR - CVE-2025-67491
Published: April 23, 2026
Vulnerability identifier: #VU127256
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-67491
CWE-ID: CWE-80
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 script code in a victim's browser.
The vulnerability exists due to improper neutralization of script-related html tags in interface/billing/ub04_helpers.php in the ub04 helper of the billing interface when handling stored user-supplied account name data in requests to the ub04_helpers.php endpoint. A remote user can update their own fname or lname value with a specially crafted payload to execute arbitrary script code in a victim's browser.
User interaction is required because a victim must access the interface/billing/ub04_helpers.php endpoint.
How to mitigate CVE-2025-67491
Install security update from vendor's website.