Is CVE-2025-67491 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2025-67491, but active exploitation has not been confirmed.

Can CVE-2025-67491 be exploited remotely?

Yes. CVE-2025-67491 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2025-67491?

CVE-2025-67491 has a CVSS score of 5.4 (MEDIUM) and an EPSS exploitation probability of 0.16%.

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MEDIUMPOC

CVE-2025-67491

CWE-79Published: February 25, 2026· Updated: Feb 25, 2026

5.4

CVSS v3.1

EPSS:0.16%probability of exploitation in 30 daysPercentile:37.1th

Official Description

OpenEMR is a free and open source electronic health records and medical practice management application. Versions 5.0.0.5 through 7.0.3.4 have a stored cross-site scripting vulnerability in the ub04 helper of the billing interface. The variable `$data` is passed in a click event handler enclosed in single quotes without proper sanitization. Thus, despite `json_encode` a malicious user can still inject a payload such as ` ac' ><img src=x onerror=alert(document.cookie)> ` to trigger the bug. This vulnerability allows low privileged users to embed malicious JS payloads on the server and perform stored XSS attack. This, in turn makes it possible for malicious users to steal the session cookies and perform unauthorized actions impersonating administrators. Version 7.0.4 patches the issue.

NVD Source

Technical Analysis

CVE-2025-67491 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

A proof-of-concept (PoC) exploit exists for CVE-2025-67491. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.