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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.001 (3.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 3.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000
Affected products
- Open-Emr Openemr
- Openemr — versions < 8.0.0
Weakness classification (CWE)
References
- github.com/openemr/openemr/security/advisories/GHSA-3f9j-cqjj-7h46 (Mitigation, Vendor Advisory)
- github.com/openemr/openemr/commit/b1e3fe8a9ed8bcaf17e0b73d7fad5434f9fe36da (Patch)
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.