CVE-2026-126451

EUVD-2026-124977
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.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.3 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 30.95%
Common Weakness Enumeration
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