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

CVE-2026-21443 has a CVSS 3.1 base score of 6.1 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.1%.

Which versions of Openemr are affected by CVE-2026-21443?

Organizations using OpenEMR should be aware of moderate risk from CVE-2026-21443 rated CVSS 6.1. Exploitation could compromise the security of affected deployments.. A patch is available.

Openemr CVE-2026-21443

MEDIUM

Improper Encoding or Escaping of Output (CWE-116)

2026-02-25 security-advisories@github.com

XSS Openemr

6.1

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

6.1 MEDIUM

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

Patch released

Feb 26, 2026 - 15:34 nvd

Patch available

CVE Published

Feb 25, 2026 - 02:16 nvd

MEDIUM 6.1

DescriptionGitHub Advisory

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.

AnalysisAI

Cross-site scripting (XSS) in OpenEMR prior to version 8.0.0 allows unauthenticated attackers to inject malicious scripts through the translation database, as the xl() function returns unescaped strings that are used directly in the application without proper context-specific escaping. An attacker with database access could exploit this to execute arbitrary JavaScript in users' browsers and compromise sensitive patient data or application functionality. …

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Vulnerability AssessmentAI

Risk Assessment	CVSS 6.1 (MEDIUM). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An attacker could exploit this vulnerability to compromise the affected system.
Remediation	A vendor patch is available — apply it immediately. … Detailed patch versions, workarounds, and compensating controls in full report.

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Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. …

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CVE-2026-21443 vulnerability details – vuln.today

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