CVE-2026-124448 OpenEMR before 8.3.0 Stored XSS via CCDA/CCD Preview XSLT Attributes
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-124448?
CVE-2026-124448 is a high-severity vulnerability in openemr, published on 8 Nov 2026.
Official description
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.
Weakness: CWE-79
Which versions are affected by CVE-2026-124448?
How do I fix CVE-2026-124448?
No fix has been published for CVE-2026-124448 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-124448 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-124448 exists.
Sources
Also known as GHSA-rghp-vwvf-c2r9, GHSA-rwwf-mjrp-f4xx.