{"id":"CVE-2026-124448","title":"OpenEMR before 8.3.0 Stored XSS via CCDA/CCD Preview XSLT Attributes","summary":"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…","severity":"high","cvss":7.6,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L","cvssSource":"cna","cwe":["CWE-79"],"vendor":"openemr","product":"openemr","affected":["openemr < 8.3.0"],"published":"2026-11-08","updated":"2026-11-08","sourceUpdated":"2026-11-08T13:15:40.313Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-124448","references":[{"url":"https://github.com/openemr/openemr/security/advisories/GHSA-rghp-vwvf-c2r9","label":"GitHub Security Advisory (GHSA-rghp-vwvf-c2r9)"},{"url":"https://www.vulncheck.com/advisories/openemr-before-8.3.0-stored-xss-via-ccda-ccd-preview-xslt-attributes","label":"VulnCheck Advisory: OpenEMR before 8.3.0 Stored XSS via CCDA/CCD Preview XSLT Attributes"}],"tags":["cve.org"],"ingestedAt":"2026-11-08T13:50:34.975Z","slug":"CVE-2026-124448","body":"## Overview\n\nOpenEMR 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.\n\n## Affected\n\n- `openemr < 8.3.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":41.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}