What is CVE-2026-124448?

CVE-2026-124448 is a high-severity vulnerability in Openemr, classified under Cross-site Scripting. CVSS score: 7.6/10. Published 2026-11-08.

How severe is CVE-2026-124448?

High severity. CVSS v3 base score is 7.6 out of 10.

XSS in Openemr

CVE-2026-124448

OpenEMR before 8.3.0 contains a stored cross-site scripting vulnerability in the CCDA/CCD preview stylesheets, where cda.xsl copies event-handler attributes whose values evade a character denylist and ccd.xsl copies table-cell attributes unsanitized into preview HTML. Authenticated users can upload a crafted CCDA/CCD document with onmouseover, onclick, or onfocus handlers to execute script in a clinician's session when previewed.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-11-08.

CVSS v3 metric

CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Openemr

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

GitHub Security Advisory (GHSA-rghp-vwvf-c2r9) (vendor-advisory)
VulnCheck Advisory: OpenEMR before 8.3.0 Stored XSS via CCDA/CCD Preview XSLT Attributes (third-party-advisory)

Frequently asked questions

What is CVE-2026-124448?: CVE-2026-124448 is a high-severity vulnerability in Openemr, classified under Cross-site Scripting. CVSS score: 7.6/10. Published 2026-11-08.
How severe is CVE-2026-124448?: High severity. CVSS v3 base score is 7.6 out of 10.