CVE-2026-126451

CVSS 8.5 (high) · published 2026-11-13

OpenEMR before 8.5.0 contains a stored cross-site scripting vulnerability that allows portal patients to run JavaScript in staff sessions by injecting javascript: URLs into document template_data. Attackers can submit an encounterForm value rendered unsanitized into an iframe src by DocumentTemplateRender, letting the script read PHI and CSRF tokens and call staff or admin endpoints.

Weakness: CWE-79

Source: NVD CVE-2026-126451

References

• https://github.com/openemr/openemr/security/advisories/GHSA-hfpq-j3fj-cpmv
• https://www.vulncheck.com/advisories/openemr-before-8.5.0-stored-xss-via-document-template-rendering

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