Is CVE-2026-21443 actively exploited?

No active exploitation of CVE-2026-21443 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-21443 be exploited remotely?

Yes. CVE-2026-21443 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-21443?

CVE-2026-21443 has a CVSS score of 6.1 (MEDIUM) and an EPSS exploitation probability of 0.04%.

HOME VULNERABILITIESCVE-2026-21443

MEDIUM

CVE-2026-21443

CWE-116Published: February 25, 2026· Updated: Feb 26, 2026

6.1

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:12.6th

Official Description

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to version 8.0.0, the `xl()` translation function returns unescaped strings. While wrapper functions exist for escaping in different contexts (`xlt()` for HTML, `xla()` for attributes, `xlj()` for JavaScript), there are places in the codebase where `xl()` output is used directly without escaping. If an attacker could insert malicious content into the translation database, these unescaped outputs could lead to XSS. Version 8.0.0 fixes the issue.

NVD Source

Technical Analysis

CVE-2026-21443 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

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.