Vulnerability in Open-Emr Openemr
CVE-2026-21443
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.
EPSS: 0.001 (4.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Open-emr Openemr
- Openemr — versions < 8.0.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Mitigation, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-21443?
- CVE-2026-21443 is a medium-severity vulnerability in Open-Emr Openemr, classified under Improper Encoding or Escaping of Output. CVSS score: 6.1/10. Published 2026-02-25.
- How severe is CVE-2026-21443?
- Medium severity. CVSS v3 base score is 6.1 out of 10.