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Vulnerabilities

Vulnerability · CVE-2026-21443

OpenEMR is a free and open source electronic health records and medical practice management application.

Published Feb 25, 2026 · catalog updated Jun 17, 2026 · OpenEMR is a free

Check if you run it

No confirmed exploitation is on record for CVE-2026-21443. EPSS is 0.15%. Act only if a listed version of OpenEMR is a free is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (OpenEMR is a free).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Low1.2
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.15%
Remediation
Advisory link
Affected products
cpe open-emr/openemr

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to version 8.0.0, the translation function returns unescaped strings. While wrapper functions exist for escaping in different contexts ( for HTML, for attributes, for JavaScript), there are places in the codebase where 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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe open-emr/openemrversion unspecified

How to fix CVE-2026-21443

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-21443. EPSS is 0.15%. Act only if a listed version of OpenEMR is a free is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-116. EPSS 0.15%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 25, 2026 · NIST NVD

    Detected

    OpenEMR is a free and open source electronic health records and medical practice management application. Prior to version 8.0.0, the translation function returns unescaped strings. While wrapper functions exist for escaping in different contexts ( for HTML, for attributes, for JavaScript), there are places in the codebase where output is used directly without escaping. If an attacker could insert

  2. Jun 17, 2026 · NIST NVD

    Updated

    OpenEMR is a free and open source electronic health records and medical practice management application. Prior to version 8.0.0, the translation function returns unescaped strings. While wrapper functions exist for escaping in different contexts ( for HTML, for attributes, for JavaScript), there are places in the codebase where output is used directly without escaping. If an attacker could insert

Sources

  • CVE.orgVulnerability recordCVE-2026-21443

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-21443

    30-day exploitation probability 0.2%

    first.org
  • NIST NVDVulnerability recordCVE-2026-21443

    OpenEMR is a free and open source electronic health records and medical practice management application. Prior to version 8.0.0, the translation function returns unescaped strings. While wrapper functions exist for escaping in different contexts ( for HTML,

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.